--- loncom/interface/loncommon.pm	2014/03/18 01:49:39	1.1075.2.69
+++ loncom/interface/loncommon.pm	2018/07/04 13:44:16	1.1319
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common routines
 #
-# $Id: loncommon.pm,v 1.1075.2.69 2014/03/18 01:49:39 raeburn Exp $
+# $Id: loncommon.pm,v 1.1319 2018/07/04 13:44:16 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -71,12 +71,23 @@ use Apache::lonuserutils();
 use Apache::lonuserstate();
 use Apache::courseclassifier();
 use LONCAPA qw(:DEFAULT :match);
+use LONCAPA::LWPReq;
 use DateTime::TimeZone;
-use DateTime::Locale::Catalog;
+use DateTime::Locale;
+use Encode();
+use Text::Aspell;
 use Authen::Captcha;
 use Captcha::reCAPTCHA;
+use JSON::DWIW;
+use LWP::UserAgent;
 use Crypt::DES;
 use DynaLoader; # for Crypt::DES version
+use MIME::Lite;
+use MIME::Types;
+use File::Copy();
+use File::Path();
+use String::CRC32();
+use Short::URL();
 
 # ---------------------------------------------- Designs
 use vars qw(%defaultdesign);
@@ -161,6 +172,7 @@ sub ssi_with_retries {
 # ----------------------------------------------- Filetypes/Languages/Copyright
 my %language;
 my %supported_language;
+my %supported_codes;
 my %latex_language;		# For choosing hyphenation in <transl..>
 my %latex_language_bykey;	# for choosing hyphenation from metadata
 my %cprtag;
@@ -191,18 +203,19 @@ BEGIN {
     {
         my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}.
                                    '/language.tab';
-        if ( open(my $fh,"<$langtabfile") ) {
+        if ( open(my $fh,'<',$langtabfile) ) {
             while (my $line = <$fh>) {
                 next if ($line=~/^\#/);
                 chomp($line);
-                my ($key,$two,$country,$three,$enc,$val,$sup,$latex)=(split(/\t/,$line));
+                my ($key,$code,$country,$three,$enc,$val,$sup,$latex)=(split(/\t/,$line));
                 $language{$key}=$val.' - '.$enc;
                 if ($sup) {
                     $supported_language{$key}=$sup;
+		    $supported_codes{$key}   = $code;
                 }
 		if ($latex) {
 		    $latex_language_bykey{$key} = $latex;
-		    $latex_language{$two} = $latex;
+		    $latex_language{$code} = $latex;
 		}
             }
             close($fh);
@@ -212,7 +225,7 @@ BEGIN {
     {
         my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
                                   '/copyright.tab';
-        if ( open (my $fh,"<$copyrightfile") ) {
+        if ( open (my $fh,'<',$copyrightfile) ) {
             while (my $line = <$fh>) {
                 next if ($line=~/^\#/);
                 chomp($line);
@@ -226,7 +239,7 @@ BEGIN {
     {
         my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
                                   '/source_copyright.tab';
-        if ( open (my $fh,"<$sourcecopyrightfile") ) {
+        if ( open (my $fh,'<',$sourcecopyrightfile) ) {
             while (my $line = <$fh>) {
                 next if ($line =~ /^\#/);
                 chomp($line);
@@ -240,7 +253,7 @@ BEGIN {
 # -------------------------------------------------------------- default domain designs
     my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
     my $designfile = $designdir.'/default.tab';
-    if ( open (my $fh,"<$designfile") ) {
+    if ( open (my $fh,'<',$designfile) ) {
         while (my $line = <$fh>) {
             next if ($line =~ /^\#/);
             chomp($line);
@@ -254,12 +267,12 @@ BEGIN {
     {
         my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}.
                                   '/filecategories.tab';
-        if ( open (my $fh,"<$categoryfile") ) {
+        if ( open (my $fh,'<',$categoryfile) ) {
 	    while (my $line = <$fh>) {
 		next if ($line =~ /^\#/);
 		chomp($line);
                 my ($extension,$category)=(split(/\s+/,$line,2));
-                push @{$category_extensions{lc($category)}},$extension;
+                push(@{$category_extensions{lc($category)}},$extension);
             }
             close($fh);
         }
@@ -269,7 +282,7 @@ BEGIN {
     {
         my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}.
                '/filetypes.tab';
-        if ( open (my $fh,"<$typesfile") ) {
+        if ( open (my $fh,'<',$typesfile) ) {
             while (my $line = <$fh>) {
 		next if ($line =~ /^\#/);
 		chomp($line);
@@ -532,7 +545,7 @@ ENDAUTHORBRW
 
 sub coursebrowser_javascript {
     my ($domainfilter,$sec_element,$formname,$role_element,$crstype,
-        $credits_element) = @_;
+        $credits_element,$instcode) = @_;
     my $wintitle = 'Course_Browser';
     if ($crstype eq 'Community') {
         $wintitle = 'Community_Browser';
@@ -583,6 +596,12 @@ sub coursebrowser_javascript {
             var ownername = document.forms[formid].ccuname.value;
             var ownerdom =  document.forms[formid].ccdomain.options[document.forms[formid].ccdomain.selectedIndex].value;
             url += '&cloner='+ownername+':'+ownerdom;
+            if (type == 'Course') {
+                url += '&crscode='+document.forms[formid].crscode.value;
+            }
+        }
+        if (formname == 'requestcrs') {
+            url += '&crsdom=$domainfilter&crscode=$instcode';
         }
         if (multflag !=null && multflag != '') {
             url += '&multiple='+multflag;
@@ -666,7 +685,7 @@ if (!Array.prototype.indexOf) {
         var n = 0;
         if (arguments.length > 0) {
             n = Number(arguments[1]);
-            if (n !== n) { // shortcut for verifying if it's NaN
+            if (n !== n) { // shortcut for verifying if it is NaN
                 n = 0;
             } else if (n !== 0 && n !== (1 / 0) && n !== -(1 / 0)) {
                 n = (n > 0 || -1) * Math.floor(Math.abs(n));
@@ -867,6 +886,8 @@ sub selectcourse_link {
    my $linktext = &mt('Select Course');
    if ($selecttype eq 'Community') {
        $linktext = &mt('Select Community');
+   } elsif ($selecttype eq 'Placement') {
+       $linktext = &mt('Select Placement Test'); 
    } elsif ($selecttype eq 'Course/Community') {
        $linktext = &mt('Select Course/Community');
        $type = '';
@@ -902,12 +923,12 @@ sub check_uncheck_jscript {
 function checkAll(field) {
     if (field.length > 0) {
         for (i = 0; i < field.length; i++) {
-            if (!field[i].disabled) {
+            if (!field[i].disabled) { 
                 field[i].checked = true;
             }
         }
     } else {
-        if (!field.disabled) {
+        if (!field.disabled) { 
             field.checked = true;
         }
     }
@@ -927,8 +948,8 @@ ENDSCRT
 }
 
 sub select_timezone {
-   my ($name,$selected,$onchange,$includeempty)=@_;
-   my $output='<select name="'.$name.'" '.$onchange.'>'."\n";
+   my ($name,$selected,$onchange,$includeempty,$disabled)=@_;
+   my $output='<select name="'.$name.'" '.$onchange.$disabled.'>'."\n";
    if ($includeempty) {
        $output .= '<option value=""';
        if (($selected eq '') || ($selected eq 'local')) {
@@ -949,8 +970,8 @@ sub select_timezone {
 }
 
 sub select_datelocale {
-    my ($name,$selected,$onchange,$includeempty)=@_;
-    my $output='<select name="'.$name.'" '.$onchange.'>'."\n";
+    my ($name,$selected,$onchange,$includeempty,$disabled)=@_;
+    my $output='<select name="'.$name.'" '.$onchange.$disabled.'>'."\n";
     if ($includeempty) {
         $output .= '<option value=""';
         if ($selected eq '') {
@@ -958,15 +979,16 @@ sub select_datelocale {
         }
         $output .= '> </option>';
     }
+    my @languages = &Apache::lonlocal::preferred_languages();
     my (@possibles,%locale_names);
-    my @locales = DateTime::Locale::Catalog::Locales;
-    foreach my $locale (@locales) {
-        if (ref($locale) eq 'HASH') {
-            my $id = $locale->{'id'};
-            if ($id ne '') {
-                my $en_terr = $locale->{'en_territory'};
-                my $native_terr = $locale->{'native_territory'};
-                my @languages = &Apache::lonlocal::preferred_languages();
+    my @locales = DateTime::Locale->ids();
+    foreach my $id (@locales) {
+        if ($id ne '') {
+            my ($en_terr,$native_terr);
+            my $loc = DateTime::Locale->load($id);
+            if (ref($loc)) {
+                $en_terr = $loc->name();
+                $native_terr = $loc->native_name();
                 if (grep(/^en$/,@languages) || !@languages) {
                     if ($en_terr ne '') {
                         $locale_names{$id} = '('.$en_terr.')';
@@ -980,8 +1002,9 @@ sub select_datelocale {
                         $locale_names{$id} = '('.$en_terr.')';
                     }
                 }
-                push (@possibles,$id);
-            }
+                $locale_names{$id} = Encode::encode('UTF-8',$locale_names{$id});
+                push(@possibles,$id);
+            } 
         }
     }
     foreach my $item (sort(@possibles)) {
@@ -991,7 +1014,7 @@ sub select_datelocale {
         }
         $output.=">$item";
         if ($locale_names{$item} ne '') {
-            $output.="  $locale_names{$item}</option>\n";
+            $output.='  '.$locale_names{$item};
         }
         $output.="</option>\n";
     }
@@ -1000,7 +1023,7 @@ sub select_datelocale {
 }
 
 sub select_language {
-    my ($name,$selected,$includeempty) = @_;
+    my ($name,$selected,$includeempty,$noedit) = @_;
     my %langchoices;
     if ($includeempty) {
         %langchoices = ('' => 'No language preference');
@@ -1012,7 +1035,34 @@ sub select_language {
         }
     }
     %langchoices = &Apache::lonlocal::texthash(%langchoices);
-    return &select_form($selected,$name,\%langchoices);
+    return &select_form($selected,$name,\%langchoices,undef,$noedit);
+}
+
+=pod
+
+
+=item * &list_languages()
+
+Returns an array reference that is suitable for use in language prompters.
+Each array element is itself a two element array.  The first element
+is the language code.  The second element a descsriptiuon of the 
+language itself.  This is suitable for use in e.g.
+&Apache::edit::select_arg (once dereferenced that is).
+
+=cut 
+
+sub list_languages {
+    my @lang_choices;
+
+    foreach my $id (&languageids()) {
+	my $code = &supportedlanguagecode($id);
+	if ($code) {
+	    my $selector    = $supported_codes{$id};
+	    my $description = &plainlanguagedescription($id);
+	    push(@lang_choices, [$selector, $description]);
+	}
+    }
+    return \@lang_choices;
 }
 
 =pod
@@ -1049,6 +1099,9 @@ linked_select_forms takes the following
 =item * $onchangesecond, additional javascript call to execute for an onchange
         event for the second <select> tag
 
+=item * $suffix, to differentiate separate uses of select2data javascript
+        objects in a page.
+
 =back 
 
 Below is an example of such a hash.  Only the 'text', 'default', and 
@@ -1103,7 +1156,8 @@ sub linked_select_forms {
         $hashref,
         $menuorder,
         $onchangefirst,
-        $onchangesecond
+        $onchangesecond,
+        $suffix
         ) = @_;
     my $second = "document.$formname.$secondselectname";
     my $first = "document.$formname.$firstselectname";
@@ -1111,42 +1165,40 @@ sub linked_select_forms {
     my $result = '';
     $result.='<script type="text/javascript" language="JavaScript">'."\n";
     $result.="// <![CDATA[\n";
-    $result.="var select2data = new Object();\n";
+    $result.="var select2data${suffix} = new Object();\n";
     $" = '","';
     my $debug = '';
     foreach my $s1 (sort(keys(%$hashref))) {
-        $result.="select2data.d_$s1 = new Object();\n";        
-        $result.="select2data.d_$s1.def = new String('".
+        $result.="select2data${suffix}['d_$s1'] = new Object();\n";        
+        $result.="select2data${suffix}['d_$s1'].def = new String('".
             $hashref->{$s1}->{'default'}."');\n";
-        $result.="select2data.d_$s1.values = new Array(";
+        $result.="select2data${suffix}['d_$s1'].values = new Array(";
         my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
         if (ref($hashref->{$s1}->{'order'}) eq 'ARRAY') {
             @s2values = @{$hashref->{$s1}->{'order'}};
         }
         $result.="\"@s2values\");\n";
-        $result.="select2data.d_$s1.texts = new Array(";        
+        $result.="select2data${suffix}['d_$s1'].texts = new Array(";        
         my @s2texts;
         foreach my $value (@s2values) {
-            push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
+            push(@s2texts, $hashref->{$s1}->{'select2'}->{$value});
         }
         $result.="\"@s2texts\");\n";
     }
     $"=' ';
     $result.= <<"END";
 
-function select1_changed() {
+function select1${suffix}_changed() {
     // Determine new choice
-    var newvalue = "d_" + $first.value;
+    var newvalue = "d_" + $first.options[$first.selectedIndex].value;
     // update select2
-    var values     = select2data[newvalue].values;
-    var texts      = select2data[newvalue].texts;
-    var select2def = select2data[newvalue].def;
+    var values     = select2data${suffix}[newvalue].values;
+    var texts      = select2data${suffix}[newvalue].texts;
+    var select2def = select2data${suffix}[newvalue].def;
     var i;
     // out with the old
-    for (i = 0; i < $second.options.length; i++) {
-        $second.options[i] = null;
-    }
-    // in with the nuclear
+    $second.options.length = 0;
+    // in with the new
     for (i=0;i<values.length; i++) {
         $second.options[i] = new Option(values[i]);
         $second.options[i].value = values[i];
@@ -1160,7 +1212,7 @@ function select1_changed() {
 </script>
 END
     # output the initial values for the selection lists
-    $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed();$onchangefirst\">\n";
+    $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1${suffix}_changed();$onchangefirst\">\n";
     my @order = sort(keys(%{$hashref}));
     if (ref($menuorder) eq 'ARRAY') {
         @order = @{$menuorder};
@@ -1237,11 +1289,7 @@ sub help_open_topic {
     $topic=~s/\W/\_/g;
 
     if (!$stayOnPage) {
-        if ($env{'browser.mobile'}) {
-	    $link = "javascript:openMyModal('/adm/help/${filename}.hlp',$width,$height,'yes');";
-        } else {
-            $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
-        }
+	$link = "javascript:openMyModal('/adm/help/${filename}.hlp',$width,$height,'yes');";
     } elsif ($stayOnPage eq 'popup') {
         $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
     } else {
@@ -1249,9 +1297,13 @@ sub help_open_topic {
     }
 
     # Add the text
+    my $target = ' target="_top"';
+    if (($env{'request.lti.login'}) && ($env{'request.lti.target'} eq 'iframe')) {
+        $target = '';
+    }
     if ($text ne "") {	
 	$template.='<span class="LC_help_open_topic">'
-                  .'<a target="_top" href="'.$link.'">'
+                  .'<a'.$target.' href="'.$link.'">'
                   .$text.'</a>';
     }
 
@@ -1261,7 +1313,7 @@ sub help_open_topic {
     if ($imgid ne '') {
         $imgid = ' id="'.$imgid.'"';
     }
-    $template.=' <a target="_top" href="'.$link.'" title="'.$title.'">'
+    $template.=' <a'.$target.' href="'.$link.'" title="'.$title.'">'
               .'<img src="'.$helpicon.'" border="0"'
               .' alt="'.&mt('Help: [_1]',$topic).'"'
               .' title="'.$title.'" style="vertical-align:middle;"'.$imgid 
@@ -1290,8 +1342,10 @@ sub helpLatexCheatsheet {
 	  .&help_open_topic('Other_Symbols',&mt('Other Symbols'),$stayOnPage,undef,600)
 	  .'</span>';
     unless ($not_author) {
-        $out .= ' <span>'
-	       .&help_open_topic('Authoring_Output_Tags',&mt('Output Tags'),$stayOnPage,undef,600)
+        $out .= '<span>'
+               .&help_open_topic('Authoring_Output_Tags',&mt('Output Tags'),$stayOnPage,undef,600)
+               .'</span> <span>'
+               .&help_open_topic('Authoring_Multilingual_Problems',&mt('How to create problems in different languages'),$stayOnPage,undef,600)
 	       .'</span>';
     }
     $out .= '</span>'; # End cheatsheet
@@ -1355,10 +1409,8 @@ sub help_open_menu {
 sub top_nav_help {
     my ($text) = @_;
     $text = &mt($text);
-    my $stay_on_page;
-    unless ($env{'environment.remote'} eq 'on') {
-        $stay_on_page = 1;
-    }
+    my $stay_on_page = 1;
+
     my ($link,$banner_link);
     unless ($env{'request.noversionuri'} =~ m{^/adm/helpmenu}) {
         $link = ($stay_on_page) ? "javascript:helpMenu('display')"
@@ -1388,9 +1440,9 @@ sub help_menu_js {
         &Apache::loncommon::start_page('Help Menu', undef,
 				       {'frameset'    => 1,
 					'js_ready'    => 1,
-                                        'use_absolute' => $httphost, 
+                                        'use_absolute' => $httphost,
 					'add_entries' => {
-					    'border' => '0',
+					    'border' => '0', 
 					    'rows'   => "110,*",},});
     my $end_page =
         &Apache::loncommon::end_page({'frameset' => 1,
@@ -1454,19 +1506,24 @@ sub help_open_bug {
     {
 	$link = $url;
     }
+
+    my $target = ' target="_top"';
+    if (($env{'request.lti.login'}) && ($env{'request.lti.target'} eq 'iframe')) {
+        $target = '';
+    }
     # Add the text
     if ($text ne "")
     {
 	$template .= 
   "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
-  "<td bgcolor='#FF5555'><a target=\"_top\" href=\"$link\"><span style=\"color:#FFFFFF;font-size:10pt;\">$text</span></a>";
+  "<td bgcolor='#FF5555'><a".$target." href=\"$link\"><span style=\"color:#FFFFFF;font-size:10pt;\">$text</span></a>";
     }
 
     # Add the graphic
     my $title = &mt('Report a Bug');
     my $bugicon=&lonhttpdurl("/adm/lonMisc/smallBug.gif");
     $template .= <<"ENDTEMPLATE";
- <a target="_top" href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
+ <a$target href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
 ENDTEMPLATE
     if ($text ne '') { $template.='</td></tr></table>' };
     return $template;
@@ -1731,6 +1788,524 @@ RESIZE
 
 }
 
+sub colorfuleditor_js {
+    my $browse_or_search;
+    my $respath;
+    my ($cnum,$cdom) = &crsauthor_url();
+    if ($cnum) {
+        $respath = "/res/$cdom/$cnum/";
+        my %js_lt = &Apache::lonlocal::texthash(
+            sunm => 'Sub-directory name',
+            save => 'Save page to make this permanent',
+        );
+        &js_escape(\%js_lt);
+        $browse_or_search = <<"END";
+
+    function toggleChooser(form,element,titleid,only,search) {
+        var disp = 'none';
+        if (document.getElementById('chooser_'+element)) {
+            var curr = document.getElementById('chooser_'+element).style.display;
+            if (curr == 'none') {
+                disp='inline';
+                if (form.elements['chooser_'+element].length) {
+                    for (var i=0; i<form.elements['chooser_'+element].length; i++) {
+                        form.elements['chooser_'+element][i].checked = false;
+                    }
+                }
+                toggleResImport(form,element);
+            }
+            document.getElementById('chooser_'+element).style.display = disp;
+        }
+    }
+
+    function toggleCrsFile(form,element,numdirs) {
+        if (document.getElementById('chooser_'+element+'_crsres')) {
+            var curr = document.getElementById('chooser_'+element+'_crsres').style.display;
+            if (curr == 'none') {
+                if (numdirs) {
+                    form.elements['coursepath_'+element].selectedIndex = 0;
+                    if (numdirs > 1) {
+                        window['select1'+element+'_changed']();
+                    }
+                }
+            } 
+            document.getElementById('chooser_'+element+'_crsres').style.display = 'block';
+            
+        }
+        if (document.getElementById('chooser_'+element+'_upload')) {
+            document.getElementById('chooser_'+element+'_upload').style.display = 'none';
+            if (document.getElementById('uploadcrsres_'+element)) {
+                document.getElementById('uploadcrsres_'+element).value = '';
+            }
+        }
+        return;
+    }
+
+    function toggleCrsUpload(form,element,numcrsdirs) {
+        if (document.getElementById('chooser_'+element+'_crsres')) {
+            document.getElementById('chooser_'+element+'_crsres').style.display = 'none';
+        }
+        if (document.getElementById('chooser_'+element+'_upload')) {
+            var curr = document.getElementById('chooser_'+element+'_upload').style.display;
+            if (curr == 'none') {
+                if (numcrsdirs) {
+                   form.elements['crsauthorpath_'+element].selectedIndex = 0;
+                   form.elements['newsubdir_'+element][0].checked = true;
+                   toggleNewsubdir(form,element);
+                }
+            }
+            document.getElementById('chooser_'+element+'_upload').style.display = 'block';
+        }
+        return;
+    }
+
+    function toggleResImport(form,element) {
+        var choices = new Array('crsres','upload');
+        for (var i=0; i<choices.length; i++) {
+            if (document.getElementById('chooser_'+element+'_'+choices[i])) {
+                document.getElementById('chooser_'+element+'_'+choices[i]).style.display = 'none';
+            }
+        }
+    }
+
+    function toggleNewsubdir(form,element) {
+        var newsub = form.elements['newsubdir_'+element];
+        if (newsub) {
+            if (newsub.length) {
+                for (var j=0; j<newsub.length; j++) {
+                    if (newsub[j].checked) {
+                        if (document.getElementById('newsubdirname_'+element)) {
+                            if (newsub[j].value == '1') {
+                                document.getElementById('newsubdirname_'+element).type = "text";
+                                if (document.getElementById('newsubdir_'+element)) {
+                                    document.getElementById('newsubdir_'+element).innerHTML = '<br />$js_lt{sunm}';
+                                }
+                            } else {
+                                document.getElementById('newsubdirname_'+element).type = "hidden";
+                                document.getElementById('newsubdirname_'+element).value = "";
+                                document.getElementById('newsubdir_'+element).innerHTML = "";
+                            }
+                        }
+                        break; 
+                    }
+                }
+            }
+        }
+    }
+
+    function updateCrsFile(form,element) {
+        var directory = form.elements['coursepath_'+element];
+        var filename = form.elements['coursefile_'+element];
+        var path = directory.options[directory.selectedIndex].value;
+        var file = filename.options[filename.selectedIndex].value;
+        form.elements[element].value = '$respath';
+        if (path == '/') {
+            form.elements[element].value += file;
+        } else {
+            form.elements[element].value += path+'/'+file;
+        }
+        unClean();
+        if (document.getElementById('previewimg_'+element)) {
+            document.getElementById('previewimg_'+element).src = form.elements[element].value;
+            var newsrc = document.getElementById('previewimg_'+element).src; 
+        }
+        if (document.getElementById('showimg_'+element)) {
+            document.getElementById('showimg_'+element).innerHTML = '($js_lt{save})';
+        }
+        toggleChooser(form,element);
+        return;
+    }
+
+    function uploadDone(suffix,name) {
+        if (name) {
+	    document.forms["lonhomework"].elements[suffix].value = name;
+            unClean();
+            toggleChooser(document.forms["lonhomework"],suffix);
+        }
+    }
+
+\$(document).ready(function(){
+
+    \$(document).delegate('form :submit', 'click', function( event ) {
+        if ( \$( this ).hasClass( "LC_uploadcrsres" ) ) {
+            var buttonId = this.id;
+            var suffix = buttonId.toString();
+            suffix = suffix.replace(/^crsupload_/,'');
+            event.preventDefault();
+            document.lonhomework.target = 'crsupload_target_'+suffix;
+            document.lonhomework.action = '/adm/coursepub?LC_uploadcrsres='+suffix;
+            \$(this.form).submit();
+            document.lonhomework.target = '';
+            if (document.getElementById('crsuploadto_'+suffix)) {
+                document.lonhomework.action = document.getElementById('crsuploadto_'+suffix).value;
+            }
+            return false;
+        }
+    });
+});
+END
+    }
+    return <<"COLORFULEDIT"
+<script type="text/javascript">
+// <![CDATA[>
+    function fold_box(curDepth, lastresource){
+
+    // we need a list because there can be several blocks you need to fold in one tag
+        var block = document.getElementsByName('foldblock_'+curDepth);
+    // but there is only one folding button per tag
+        var foldbutton = document.getElementById('folding_btn_'+curDepth);
+
+        if(block.item(0).style.display == 'none'){
+
+            foldbutton.value = '@{[&mt("Hide")]}';
+            for (i = 0; i < block.length; i++){
+                block.item(i).style.display = '';
+            }
+        }else{
+
+            foldbutton.value = '@{[&mt("Show")]}';
+            for (i = 0; i < block.length; i++){
+                // block.item(i).style.visibility = 'collapse';
+                block.item(i).style.display = 'none';
+            }
+        };
+        saveState(lastresource);
+    }
+
+    function saveState (lastresource) {
+
+        var tag_list = getTagList();
+        if(tag_list != null){
+            var timestamp = new Date().getTime();
+            var key = lastresource;
+
+            // the value pattern is: 'time;key1,value1;key2,value2; ... '
+            // starting with timestamp
+            var value = timestamp+';';
+
+            // building the list of key-value pairs
+            for(var i = 0; i < tag_list.length; i++){
+                value += tag_list[i]+',';
+                value += document.getElementsByName(tag_list[i])[0].style.display+';';
+            }
+
+            // only iterate whole storage if nothing to override
+            if(localStorage.getItem(key) == null){        
+
+                // prevent storage from growing large
+                if(localStorage.length > 50){
+                    var regex_getTimestamp = /^(?:\d)+;/;
+                    var oldest_timestamp = regex_getTimestamp.exec(localStorage.key(0));
+                    var oldest_key;
+                    
+                    for(var i = 1; i < localStorage.length; i++){
+                        if (regex_getTimestamp.exec(localStorage.key(i)) < oldest_timestamp) {
+                            oldest_key = localStorage.key(i);
+                            oldest_timestamp = regex_getTimestamp.exec(oldest_key);
+                        }
+                    }
+                    localStorage.removeItem(oldest_key);
+                }
+            }
+            localStorage.setItem(key,value);
+        }
+    }
+
+    // restore folding status of blocks (on page load)
+    function restoreState (lastresource) {
+        if(localStorage.getItem(lastresource) != null){
+            var key = lastresource;
+            var value = localStorage.getItem(key);
+            var regex_delTimestamp = /^\d+;/;
+
+            value.replace(regex_delTimestamp, '');
+
+            var valueArr = value.split(';');
+            var pairs;
+            var elements;
+            for (var i = 0; i < valueArr.length; i++){
+                pairs = valueArr[i].split(',');
+                elements = document.getElementsByName(pairs[0]);
+
+                for (var j = 0; j < elements.length; j++){  
+                    elements[j].style.display = pairs[1];
+                    if (pairs[1] == "none"){
+                        var regex_id = /([_\\d]+)\$/;
+                        regex_id.exec(pairs[0]);
+                        document.getElementById("folding_btn"+RegExp.\$1).value = "Show";
+                    }
+                }
+            }
+        }
+    }
+
+    function getTagList () {
+        
+        var stringToSearch = document.lonhomework.innerHTML;
+
+        var ret = new Array();
+        var regex_findBlock = /(foldblock_.*?)"/g;
+        var tag_list = stringToSearch.match(regex_findBlock);
+
+        if(tag_list != null){
+            for(var i = 0; i < tag_list.length; i++){            
+                ret.push(tag_list[i].replace(/"/, ''));
+            }
+        }
+        return ret;
+    }
+
+    function saveScrollPosition (resource) {
+        var tag_list = getTagList();
+
+        // we dont always want to jump to the first block
+        // 170 is roughly above the "Problem Editing" header. we just want to save if the user scrolled down further than this
+        if(\$(window).scrollTop() > 170){
+            if(tag_list != null){
+                var result;
+                for(var i = 0; i < tag_list.length; i++){
+                    if(isElementInViewport(tag_list[i])){
+                        result += tag_list[i]+';';
+                    }
+                }
+                sessionStorage.setItem('anchor_'+resource, result);
+            }
+        } else {
+            // we dont need to save zero, just delete the item to leave everything tidy
+            sessionStorage.removeItem('anchor_'+resource);
+        }
+    }
+
+    function restoreScrollPosition(resource){
+
+        var elem = sessionStorage.getItem('anchor_'+resource);
+        if(elem != null){
+            var tag_list = elem.split(';');
+            var elem_list;
+
+            for(var i = 0; i < tag_list.length; i++){
+                elem_list = document.getElementsByName(tag_list[i]);
+                
+                if(elem_list.length > 0){
+                    elem = elem_list[0];
+                    break;
+                }
+            }
+            elem.scrollIntoView();
+        }
+    }
+
+    function isElementInViewport(el) {
+
+        // change to last element instead of first
+        var elem = document.getElementsByName(el);
+        var rect = elem[0].getBoundingClientRect();
+
+        return (
+            rect.top >= 0 &&
+            rect.left >= 0 &&
+            rect.bottom <= (window.innerHeight || document.documentElement.clientHeight) && /*or $(window).height() */
+            rect.right <= (window.innerWidth || document.documentElement.clientWidth) /*or $(window).width() */
+        );
+    }
+    
+    function autosize(depth){
+        var cmInst = window['cm'+depth];
+        var fitsizeButton = document.getElementById('fitsize'+depth);
+
+        // is fixed size, switching to dynamic
+        if (sessionStorage.getItem("autosized_"+depth) == null) {
+            cmInst.setSize("","auto");
+            fitsizeButton.value = "@{[&mt('Fixed size')]}";
+            sessionStorage.setItem("autosized_"+depth, "yes");
+
+        // is dynamic size, switching to fixed
+        } else {
+            cmInst.setSize("","300px");
+            fitsizeButton.value = "@{[&mt('Dynamic size')]}";
+            sessionStorage.removeItem("autosized_"+depth);
+        }
+    }
+
+$browse_or_search
+
+// ]]>
+</script>
+COLORFULEDIT
+}
+
+sub xmleditor_js {
+    return <<XMLEDIT
+<script type="text/javascript" src="/adm/jQuery/addons/jquery-scrolltofixed.js"></script>
+<script type="text/javascript">
+// <![CDATA[>
+
+    function saveScrollPosition (resource) {
+
+        var scrollPos = \$(window).scrollTop();
+        sessionStorage.setItem(resource,scrollPos);
+    }
+
+    function restoreScrollPosition(resource){
+
+        var scrollPos = sessionStorage.getItem(resource);
+        \$(window).scrollTop(scrollPos);
+    }
+
+    // unless internet explorer
+    if (!(window.navigator.appName == "Microsoft Internet Explorer" && (document.documentMode || document.compatMode))){
+
+        \$(document).ready(function() {
+             \$(".LC_edit_actionbar").scrollToFixed(\{zIndex: 100\});
+        });
+    }
+
+    // inserts text at cursor position into codemirror (xml editor only)
+    function insertText(text){
+        cm.focus();
+        var curPos = cm.getCursor();
+        cm.replaceRange(text.replace(/ESCAPEDSCRIPT/g,'script'), {line: curPos.line,ch: curPos.ch});
+    }
+// ]]>
+</script>
+XMLEDIT
+}
+
+sub insert_folding_button {
+    my $curDepth = $Apache::lonxml::curdepth;
+    my $lastresource = $env{'request.ambiguous'};
+
+    return "<input type=\"button\" id=\"folding_btn_$curDepth\" 
+            value=\"".&mt('Hide')."\" onclick=\"fold_box('$curDepth','$lastresource')\">";
+}
+
+sub crsauthor_url {
+    my ($url) = @_;
+    if ($url eq '') {
+        $url = $ENV{'REQUEST_URI'};
+    }
+    my ($cnum,$cdom);
+    if ($env{'request.course.id'}) {
+        my ($audom,$auname) = ($url =~ m{^/priv/($match_domain)/($match_name)/});
+        if ($audom ne '' && $auname ne '') {
+            if (($env{'course.'.$env{'request.course.id'}.'.num'} eq $auname) &&
+                ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $audom)) {
+                $cnum = $auname;
+                $cdom = $audom;
+            }
+        }
+    }
+    return ($cnum,$cdom);
+}
+
+sub import_crsauthor_form {
+    my ($form,$firstselectname,$secondselectname,$onchangefirst,$only,$suffix,$disabled) = @_;
+    return (0) unless ($env{'request.course.id'});
+    my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+    my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+    my $crshome = $env{'course.'.$env{'request.course.id'}.'.home'};
+    return (0) unless (($cnum ne '') && ($cdom ne ''));
+    my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
+    my @ids=&Apache::lonnet::current_machine_ids();
+    my ($output,$is_home,$relpath,%subdirs,%files,%selimport_menus);
+    
+    if (grep(/^\Q$crshome\E$/,@ids)) {
+        $is_home = 1;
+    }
+    $relpath = "/priv/$cdom/$cnum";
+    &Apache::lonnet::recursedirs($is_home,'priv',$londocroot,$relpath,'',\%subdirs,\%files);
+    my %lt = &Apache::lonlocal::texthash (
+        fnam => 'Filename',
+        dire => 'Directory',
+    );
+    my $numdirs = scalar(keys(%files));
+    my (%possexts,$singledir,@singledirfiles);
+    if ($only) {
+        map { $possexts{$_} = 1; } split(/\s*,\s*/,$only);
+    }
+    my (%nonemptydirs,$possdirs);
+    if ($numdirs > 1) {
+        my @order;
+        foreach my $key (sort { lc($a) cmp lc($b) } (keys(%files))) {
+            if (ref($files{$key}) eq 'HASH') {
+                my $shown = $key;
+                if ($key eq '') {
+                    $shown = '/';
+                }
+                my @ordered = ();
+                foreach my $file (sort { lc($a) cmp lc($b) } (keys(%{$files{$key}}))) {
+                    next if ($file =~ /\.rights$/);
+                    if ($only) {
+                        my ($ext) = ($file =~ /\.([^.]+)$/);
+                        unless ($possexts{lc($ext)}) {
+                            next;
+                        }
+                    }
+                    $selimport_menus{$key}->{'select2'}->{$file} = $file;
+                    push(@ordered,$file);
+                }
+                if (@ordered) {
+                    push(@order,$key);
+                    $nonemptydirs{$key} = 1;
+                    $selimport_menus{$key}->{'text'} = $shown;
+                    $selimport_menus{$key}->{'default'} = '';
+                    $selimport_menus{$key}->{'select2'}->{''} = '';
+                    $selimport_menus{$key}->{'order'} = \@ordered;
+                }
+            }
+        }
+        $possdirs = scalar(keys(%nonemptydirs));
+        if ($possdirs > 1) {
+            my @order = sort { lc($a) cmp lc($b) } (keys(%nonemptydirs));
+            $output = $lt{'dire'}.
+                      &linked_select_forms($form,'<br />'.
+                                           $lt{'fnam'},'',
+                                           $firstselectname,$secondselectname,
+                                           \%selimport_menus,\@order,
+                                           $onchangefirst,'',$suffix).'<br />';
+        } elsif ($possdirs == 1) {
+            $singledir = (keys(%nonemptydirs))[0];
+            if (ref($selimport_menus{$singledir}->{'order'}) eq 'ARRAY') {
+                @singledirfiles = @{$selimport_menus{$singledir}->{'order'}};
+            }
+            delete($selimport_menus{$singledir});
+        }
+    } elsif ($numdirs == 1) {
+        $singledir = (keys(%files))[0];
+        foreach my $file (sort { lc($a) cmp lc($b) } (keys(%{$files{$singledir}}))) {
+            if ($only) {
+                my ($ext) = ($file =~ /\.([^.]+)$/);
+                unless ($possexts{lc($ext)}) {
+                    next;
+                }
+            } else {
+                next if ($file =~ /\.rights$/);
+            }
+            push(@singledirfiles,$file);
+        }
+        if (@singledirfiles) {
+            $possdirs = 1;
+        }
+    }
+    if (($possdirs == 1) && (@singledirfiles)) {
+        my $showdir = $singledir;
+        if ($singledir eq '') {
+            $showdir = '/';
+        }
+        $output = $lt{'dire'}.
+                  '<select name="'.$firstselectname.'">'.
+                  '<option value="'.$singledir.'">'.$showdir.'</option>'."\n".
+                  '</select><br />'.
+                  $lt{'fnam'}.'<select name="'.$secondselectname.'">'."\n".
+                  '<option value="" selected="selected">'.$lt{'se'}.'</option>'."\n";
+        foreach my $file (@singledirfiles) {
+            $output .= '<option value="'.$file.'">'.$file.'</option>'."\n";
+        }
+        $output .= '</select><br />'."\n";
+    }
+    return ($possdirs,$output);
+}
+
 =pod
 
 =head1 Excel and CSV file utility routines
@@ -1918,10 +2493,24 @@ sub create_text_file {
 # ------------------------------------------
 
 sub domain_select {
-    my ($name,$value,$multiple)=@_;
+    my ($name,$value,$multiple,$incdoms,$excdoms)=@_;
+    my @possdoms;
+    if (ref($incdoms) eq 'ARRAY') {
+        @possdoms = @{$incdoms};
+    } else {
+        @possdoms = &Apache::lonnet::all_domains();
+    }
+
     my %domains=map { 
 	$_ => $_.' '. &Apache::lonnet::domain($_,'description') 
-    } &Apache::lonnet::all_domains();
+    } @possdoms;
+
+    if ((ref($excdoms) eq 'ARRAY') && (@{$excdoms} > 0)) {
+        foreach my $dom (@{$excdoms}) {
+            delete($domains{$dom});
+        }
+    }
+
     if ($multiple) {
 	$domains{''}=&mt('Any domain');
 	$domains{'select_form_order'} = [sort {lc($a) cmp lc($b) } (keys(%domains))];
@@ -1990,12 +2579,15 @@ sub multiple_select_form {
 
 =pod
 
-=item * &select_form($defdom,$name,$hashref,$onchange)
+=item * &select_form($defdom,$name,$hashref,$onchange,$readonly)
 
 Returns a string containing a <select name='$name' size='1'> form to 
 allow a user to select options from a ref to a hash containing:
 option_name => displayed text. An optional $onchange can include
-a javascript onchange item, e.g., onchange="this.form.submit();"  
+a javascript onchange item, e.g., onchange="this.form.submit();".
+An optional arg -- $readonly -- if true will cause the select form
+to be disabled, e.g., for the case where an instructor has a section-
+specific role, and is viewing/modifying parameters. 
 
 See lonrights.pm for an example invocation and use.
 
@@ -2003,12 +2595,16 @@ See lonrights.pm for an example invocati
 
 #-------------------------------------------
 sub select_form {
-    my ($def,$name,$hashref,$onchange) = @_;
+    my ($def,$name,$hashref,$onchange,$readonly) = @_;
     return unless (ref($hashref) eq 'HASH');
     if ($onchange) {
         $onchange = ' onchange="'.$onchange.'"';
     }
-    my $selectform = "<select name=\"$name\" size=\"1\"$onchange>\n";
+    my $disabled;
+    if ($readonly) {
+        $disabled = ' disabled="disabled"';
+    }
+    my $selectform = "<select name=\"$name\" size=\"1\"$onchange$disabled>\n";
     my @keys;
     if (exists($hashref->{'select_form_order'})) {
 	@keys=@{$hashref->{'select_form_order'}};
@@ -2177,7 +2773,7 @@ sub select_level_form {
 
 =pod
 
-=item * &select_dom_form($defdom,$name,$includeempty,$showdomdesc,$onchange,$incdoms,$excdoms)
+=item * &select_dom_form($defdom,$name,$includeempty,$showdomdesc,$onchange,$incdoms,$excdoms,$disabled)
 
 Returns a string containing a <select name='$name' size='1'> form to 
 allow a user to select the domain to preform an operation in.  
@@ -2192,16 +2788,21 @@ The optional $onchange argument specifie
 
 The optional $incdoms is a reference to an array of domains which will be the only available options.
 
-The optional $excdoms is a reference to an array of domains which will be excluded from the available options. 
+The optional $excdoms is a reference to an array of domains which will be excluded from the available options.
+
+The optional $disabled argument, if true, adds the disabled attribute to the select tag.
 
 =cut
 
 #-------------------------------------------
 sub select_dom_form {
-    my ($defdom,$name,$includeempty,$showdomdesc,$onchange,$incdoms,$excdoms) = @_;
+    my ($defdom,$name,$includeempty,$showdomdesc,$onchange,$incdoms,$excdoms,$disabled) = @_;
     if ($onchange) {
         $onchange = ' onchange="'.$onchange.'"';
     }
+    if ($disabled) {
+        $disabled = ' disabled="disabled"';
+    }
     my (@domains,%exclude);
     if (ref($incdoms) eq 'ARRAY') {
         @domains = sort {lc($a) cmp lc($b)} (@{$incdoms});
@@ -2210,9 +2811,9 @@ sub select_dom_form {
     }
     if ($includeempty) { @domains=('',@domains); }
     if (ref($excdoms) eq 'ARRAY') {
-        map { $exclude{$_} = 1; } @{$excdoms};
+        map { $exclude{$_} = 1; } @{$excdoms}; 
     }
-    my $selectdomain = "<select name=\"$name\" size=\"1\"$onchange>\n";
+    my $selectdomain = "<select name=\"$name\" size=\"1\"$onchange$disabled>\n";
     foreach my $dom (@domains) {
         next if ($exclude{$dom});
         $selectdomain.="<option value=\"$dom\" ".
@@ -2339,6 +2940,8 @@ Outputs:
 
 =item * $clientinfo
 
+=item * $clientosversion
+
 =back
 
 =back 
@@ -2358,8 +2961,9 @@ sub decode_user_agent {
     my $clientmathml='';
     my $clientunicode='0';
     my $clientmobile=0;
+    my $clientosversion='';
     for (my $i=0;$i<=$#browsertype;$i++) {
-        my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
+        my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\%/,$browsertype[$i]);
 	if (($httpbrowser=~/$match/i)  && ($httpbrowser!~/$notmatch/i)) {
 	    $clientbrowser=$bname;
             $httpbrowser=~/$vreg/i;
@@ -2379,7 +2983,12 @@ sub decode_user_agent {
     if ($httpbrowser=~/next/i) { $clientos='next'; }
     if (($httpbrowser=~/mac/i) ||
         ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
-    if ($httpbrowser=~/win/i) { $clientos='win'; }
+    if ($httpbrowser=~/win/i) {
+        $clientos='win';
+        if ($httpbrowser =~/Windows\s+NT\s+(\d+\.\d+)/i) {
+            $clientosversion = $1;
+        }
+    }
     if ($httpbrowser=~/embed/i) { $clientos='pda'; }
     if ($httpbrowser=~/(Android|iPod|iPad|iPhone|webOS|Blackberry|Windows Phone|Opera m(?:ob|in)|Fennec)/i) {
         $clientmobile=lc($1);
@@ -2390,7 +2999,8 @@ sub decode_user_agent {
         $clientinfo = 'chromeframe-'.$1;
     }
     return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
-            $clientunicode,$clientos,$clientmobile,$clientinfo);
+            $clientunicode,$clientos,$clientmobile,$clientinfo,
+            $clientosversion);
 }
 
 ###############################################################
@@ -2429,6 +3039,8 @@ This is not an optimal method, but it wo
 
 =item * authform_filesystem
 
+=item * authform_lti
+
 =back
 
 See loncreateuser.pm for invocation and use examples.
@@ -2557,7 +3169,7 @@ sub authform_nochange {
               kerb_def_dom => 'MSU.EDU',
               @_,
           );
-    my ($authnum,%can_assign) = &get_assignable_auth($in{'domain'}); 
+    my ($authnum,%can_assign) = &get_assignable_auth($in{'domain'});
     my $result;
     if (!$authnum) {
         $result = &mt('Under your current role you are not permitted to change login settings for this user');
@@ -2579,13 +3191,16 @@ sub authform_kerberos {
               @_,
               );
     my ($check4,$check5,$krbcheck,$krbarg,$krbver,$result,$authtype,
-        $autharg,$jscall);
+        $autharg,$jscall,$disabled);
     my ($authnum,%can_assign) = &get_assignable_auth($in{'domain'});
     if ($in{'kerb_def_auth'} eq 'krb5') {
        $check5 = ' checked="checked"';
     } else {
        $check4 = ' checked="checked"';
     }
+    if ($in{'readonly'}) {
+        $disabled = ' disabled="disabled"';
+    }
     $krbarg = $in{'kerb_def_dom'};
     if (defined($in{'curr_authtype'})) {
         if ($in{'curr_authtype'} eq 'krb') {
@@ -2630,7 +3245,7 @@ sub authform_kerberos {
         if (defined($in{'mode'})) {
             if ($in{'mode'} eq 'modifycourse') {
                 if ($authnum == 1) {
-                    $authtype = '<input type="radio" name="login" value="krb" />';
+                    $authtype = '<input type="radio" name="login" value="krb"'.$disabled.' />';
                 }
             }
         }
@@ -2639,7 +3254,7 @@ sub authform_kerberos {
     if ($authtype eq '') {
         $authtype = '<input type="radio" name="login" value="krb" '.
                     'onclick="'.$jscall.'" onchange="'.$jscall.'"'.
-                    $krbcheck.' />';
+                    $krbcheck.$disabled.' />';
     }
     if (($can_assign{'krb4'} && $can_assign{'krb5'}) ||
         ($can_assign{'krb4'} && !$can_assign{'krb5'} &&
@@ -2652,9 +3267,9 @@ sub authform_kerberos {
          '<label>'.$authtype,
          '</label><input type="text" size="10" name="krbarg" '.
              'value="'.$krbarg.'" '.
-             'onchange="'.$jscall.'" />',
-         '<label><input type="radio" name="krbver" value="4" '.$check4.' />',
-         '</label><label><input type="radio" name="krbver" value="5" '.$check5.' />',
+             'onchange="'.$jscall.'"'.$disabled.' />',
+         '<label><input type="radio" name="krbver" value="4" '.$check4.$disabled.' />',
+         '</label><label><input type="radio" name="krbver" value="5" '.$check5.$disabled.' />',
 	 '</label>');
     } elsif ($can_assign{'krb4'}) {
         $result .= &mt
@@ -2663,7 +3278,7 @@ sub authform_kerberos {
          '<label>'.$authtype,
          '</label><input type="text" size="10" name="krbarg" '.
              'value="'.$krbarg.'" '.
-             'onchange="'.$jscall.'" />',
+             'onchange="'.$jscall.'"'.$disabled.' />',
          '<label><input type="hidden" name="krbver" value="4" />',
          '</label>');
     } elsif ($can_assign{'krb5'}) {
@@ -2673,7 +3288,7 @@ sub authform_kerberos {
          '<label>'.$authtype,
          '</label><input type="text" size="10" name="krbarg" '.
              'value="'.$krbarg.'" '.
-             'onchange="'.$jscall.'" />',
+             'onchange="'.$jscall.'"'.$disabled.' />',
          '<label><input type="hidden" name="krbver" value="5" />',
          '</label>');
     }
@@ -2686,8 +3301,11 @@ sub authform_internal {
                 kerb_def_dom => 'MSU.EDU',
                 @_,
                 );
-    my ($intcheck,$intarg,$result,$authtype,$autharg,$jscall);
+    my ($intcheck,$intarg,$result,$authtype,$autharg,$jscall,$disabled);
     my ($authnum,%can_assign) = &get_assignable_auth($in{'domain'});
+    if ($in{'readonly'}) {
+        $disabled = ' disabled="disabled"';
+    }
     if (defined($in{'curr_authtype'})) {
         if ($in{'curr_authtype'} eq 'int') {
             if ($can_assign{'int'}) {
@@ -2716,7 +3334,7 @@ sub authform_internal {
         if (defined($in{'mode'})) {
             if ($in{'mode'} eq 'modifycourse') {
                 if ($authnum == 1) {
-                    $authtype = '<input type="radio" name="login" value="int" />';
+                    $authtype = '<input type="radio" name="login" value="int"'.$disabled.' />';
                 }
             }
         }
@@ -2724,14 +3342,14 @@ sub authform_internal {
     $jscall = "javascript:changed_radio('int',$in{'formname'});";
     if ($authtype eq '') {
         $authtype = '<input type="radio" name="login" value="int" '.$intcheck.
-                    ' onchange="'.$jscall.'" onclick="'.$jscall.'" />';
+                    ' onchange="'.$jscall.'" onclick="'.$jscall.'"'.$disabled.' />';
     }
     $autharg = '<input type="password" size="10" name="intarg" value="'.
-               $intarg.'" onchange="'.$jscall.'" />';
+               $intarg.'" onchange="'.$jscall.'"'.$disabled.' />';
     $result = &mt
         ('[_1] Internally authenticated (with initial password [_2])',
          '<label>'.$authtype,'</label>'.$autharg);
-    $result.="<label><input type=\"checkbox\" name=\"visible\" onclick='if (this.checked) { this.form.intarg.type=\"text\" } else { this.form.intarg.type=\"password\" }' />".&mt('Visible input').'</label>';
+    $result.='<label><input type="checkbox" name="visible" onclick="if (this.checked) { this.form.intarg.type='."'text'".' } else { this.form.intarg.type='."'password'".' }"'.$disabled.' />'.&mt('Visible input').'</label>';
     return $result;
 }
 
@@ -2741,8 +3359,11 @@ sub authform_local {
               kerb_def_dom => 'MSU.EDU',
               @_,
               );
-    my ($loccheck,$locarg,$result,$authtype,$autharg,$jscall);
+    my ($loccheck,$locarg,$result,$authtype,$autharg,$jscall,$disabled);
     my ($authnum,%can_assign) = &get_assignable_auth($in{'domain'});
+    if ($in{'readonly'}) {
+        $disabled = ' disabled="disabled"';
+    } 
     if (defined($in{'curr_authtype'})) {
         if ($in{'curr_authtype'} eq 'loc') {
             if ($can_assign{'loc'}) {
@@ -2771,7 +3392,7 @@ sub authform_local {
         if (defined($in{'mode'})) {
             if ($in{'mode'} eq 'modifycourse') {
                 if ($authnum == 1) {
-                    $authtype = '<input type="radio" name="login" value="loc" />';
+                    $authtype = '<input type="radio" name="login" value="loc"'.$disabled.' />';
                 }
             }
         }
@@ -2780,10 +3401,10 @@ sub authform_local {
     if ($authtype eq '') {
         $authtype = '<input type="radio" name="login" value="loc" '.
                     $loccheck.' onchange="'.$jscall.'" onclick="'.
-                    $jscall.'" />';
+                    $jscall.'"'.$disabled.' />';
     }
     $autharg = '<input type="text" size="10" name="locarg" value="'.
-               $locarg.'" onchange="'.$jscall.'" />';
+               $locarg.'" onchange="'.$jscall.'"'.$disabled.' />';
     $result = &mt('[_1] Local Authentication with argument [_2]',
                   '<label>'.$authtype,'</label>'.$autharg);
     return $result;
@@ -2795,8 +3416,11 @@ sub authform_filesystem {
               kerb_def_dom => 'MSU.EDU',
               @_,
               );
-    my ($fsyscheck,$result,$authtype,$autharg,$jscall);
+    my ($fsyscheck,$result,$authtype,$autharg,$jscall,$disabled);
     my ($authnum,%can_assign) = &get_assignable_auth($in{'domain'});
+    if ($in{'readonly'}) {
+        $disabled = ' disabled="disabled"';
+    }
     if (defined($in{'curr_authtype'})) {
         if ($in{'curr_authtype'} eq 'fsys') {
             if ($can_assign{'fsys'}) {
@@ -2809,7 +3433,7 @@ sub authform_filesystem {
             } else {
                 $result = &mt('Currently Filesystem Authenticated.');
                 return $result;
-            }           
+            }
         }
     } else {
         if ($authnum == 1) {
@@ -2822,7 +3446,7 @@ sub authform_filesystem {
         if (defined($in{'mode'})) {
             if ($in{'mode'} eq 'modifycourse') {
                 if ($authnum == 1) {
-                    $authtype = '<input type="radio" name="login" value="fsys" />';
+                    $authtype = '<input type="radio" name="login" value="fsys"'.$disabled.' />';
                 }
             }
         }
@@ -2831,16 +3455,71 @@ sub authform_filesystem {
     if ($authtype eq '') {
         $authtype = '<input type="radio" name="login" value="fsys" '.
                     $fsyscheck.' onchange="'.$jscall.'" onclick="'.
-                    $jscall.'" />';
+                    $jscall.'"'.$disabled.' />';
     }
-    $autharg = '<input type="text" size="10" name="fsysarg" value=""'.
-               ' onchange="'.$jscall.'" />';
+    $autharg = '<input type="password" size="10" name="fsysarg" value=""'.
+               ' onchange="'.$jscall.'"'.$disabled.' />';
     $result = &mt
         ('[_1] Filesystem Authenticated (with initial password [_2])',
-         '<label><input type="radio" name="login" value="fsys" '.
-         $fsyscheck.'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
-         '</label><input type="password" size="10" name="fsysarg" value="" '.
-                  'onchange="'.$jscall.'" />');
+         '<label>'.$authtype,'</label>'.$autharg);
+    return $result;
+}
+
+sub authform_lti {
+    my %in = (
+              formname => 'document.cu',
+              kerb_def_dom => 'MSU.EDU',
+              @_,
+              );
+    my ($lticheck,$result,$authtype,$autharg,$jscall,$disabled);
+    my ($authnum,%can_assign) = &get_assignable_auth($in{'domain'});
+    if ($in{'readonly'}) {
+        $disabled = ' disabled="disabled"';
+    }
+    if (defined($in{'curr_authtype'})) {
+        if ($in{'curr_authtype'} eq 'lti') {
+            if ($can_assign{'lti'}) {
+                $lticheck = 'checked="checked" ';
+                if (defined($in{'mode'})) {
+                    if ($in{'mode'} eq 'modifyuser') {
+                        $lticheck = '';
+                    }
+                }
+            } else {
+                $result = &mt('Currently LTI Authenticated.');
+                return $result;
+            }
+        }
+    } else {
+        if ($authnum == 1) {
+            $authtype = '<input type="hidden" name="login" value="lti" />';
+        }
+    }
+    if (!$can_assign{'lti'}) {
+        return;
+    } elsif ($authtype eq '') {
+        if (defined($in{'mode'})) {
+            if ($in{'mode'} eq 'modifycourse') {
+                if ($authnum == 1) {
+                    $authtype = '<input type="radio" name="login" value="lti"'.$disabled.' />';
+                }
+            }
+        }
+    }
+    $jscall = "javascript:changed_radio('lti',$in{'formname'});";
+    if (($authtype eq '') && (($in{'mode'} eq 'modifycourse') || ($in{'curr_authtype'} ne 'lti'))) {
+        $authtype = '<input type="radio" name="login" value="lti" '.
+                    $lticheck.' onchange="'.$jscall.'" onclick="'.
+                    $jscall.'"'.$disabled.' />';
+    }
+    $autharg = '<input type="hidden" name="ltiarg" value="" />';
+    if ($authtype) {
+        $result = &mt('[_1] LTI Authenticated',
+                      '<label>'.$authtype.'</label>'.$autharg);
+    } else {
+        $result = '<b>'.&mt('LTI Authenticated').'</b>'.
+                  $autharg;
+    }
     return $result;
 }
 
@@ -2854,6 +3533,7 @@ sub get_assignable_auth {
                           krb5 => 1,
                           int  => 1,
                           loc  => 1,
+                          lti  => 1,
                      );
     my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$dom);
     if (ref($domconfig{'usercreation'}) eq 'HASH') {
@@ -2862,7 +3542,7 @@ sub get_assignable_auth {
             my $context;
             if ($env{'request.role'} =~ /^au/) {
                 $context = 'author';
-            } elsif ($env{'request.role'} =~ /^dc/) {
+            } elsif ($env{'request.role'} =~ /^(dc|dh)/) {
                 $context = 'domain';
             } elsif ($env{'request.course.id'}) {
                 $context = 'course';
@@ -3053,13 +3733,73 @@ sub get_related_words {
     untie %thesaurus_db;
     return @Words;
 }
+###############################################################
+#
+#  Spell checking
+#
 
 =pod
 
 =back
 
+=head1 Spell checking
+
+=over 4
+
+=item * &check_spelling($wordlist $language)
+
+Takes a string containing words and feeds it to an external
+spellcheck program via a pipeline. Returns a string containing
+them mis-spelled words.
+
+Parameters:
+
+=over 4
+
+=item - $wordlist
+
+String that will be fed into the spellcheck program.
+
+=item - $language
+
+Language string that specifies the language for which the spell
+check will be performed.
+
+=back
+
+=back
+
+Note: This sub assumes that aspell is installed.
+
+
 =cut
 
+
+sub check_spelling {
+    my ($wordlist, $language) = @_;
+    my @misspellings;
+    
+    # Generate the speller and set the langauge.
+    # if explicitly selected:
+
+    my $speller = Text::Aspell->new;
+    if ($language) {
+	$speller->set_option('lang', $language);
+    }
+
+    # Turn the word list into an array of words by splittingon whitespace
+
+    my @words = split(/\s+/, $wordlist);
+
+    foreach my $word (@words) {
+	if(! $speller->check($word)) {
+	    push(@misspellings, $word);
+	}
+    }
+    return join(' ', @misspellings);
+    
+}
+
 # -------------------------------------------------------------- Plaintext name
 =pod
 
@@ -3523,7 +4263,11 @@ category
 
 sub filecategorytypes {
     my ($cat) = @_;
-    return @{$category_extensions{lc($cat)}};
+    if (ref($category_extensions{lc($cat)}) eq 'ARRAY') { 
+        return @{$category_extensions{lc($cat)}};
+    } else {
+        return ();
+    }
 }
 
 =pod
@@ -3666,7 +4410,7 @@ sub user_lang {
 =over 4
 
 =item * &get_previous_attempt($symb, $username, $domain, $course,
-    $getattempt, $regexp, $gradesub)
+    $getattempt, $regexp, $gradesub, $usec, $identifier)
 
 Return string with previous attempt on problem. Arguments:
 
@@ -3688,6 +4432,11 @@ Return string with previous attempt on p
 
 =item * $gradesub: routine that processes the string if it matches $regexp
 
+=item * $usec: section of the desired student
+
+=item * $identifier: counter for student (multiple students one problem) or 
+    problem (one student; whole sequence).
+
 =back
 
 The output string is a table containing all desired attempts, if any.
@@ -3695,7 +4444,7 @@ The output string is a table containing
 =cut
 
 sub get_previous_attempt {
-  my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
+  my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub,$usec,$identifier)=@_;
   my $prevattempts='';
   no strict 'refs';
   if ($symb) {
@@ -3705,13 +4454,18 @@ sub get_previous_attempt {
       my %lasthash=();
       my $version;
       for ($version=1;$version<=$returnhash{'version'};$version++) {
-        foreach my $key (sort(split(/\:/,$returnhash{$version.':keys'}))) {
-	  $lasthash{$key}=$returnhash{$version.':'.$key};
+        foreach my $key (reverse(sort(split(/\:/,$returnhash{$version.':keys'})))) {
+            if ($key =~ /\.rawrndseed$/) {
+                my ($id) = ($key =~ /^(.+)\.rawrndseed$/);
+                $lasthash{$id.'.rndseed'} = $returnhash{$version.':'.$key};
+            } else {
+                $lasthash{$key}=$returnhash{$version.':'.$key};
+            }
         }
       }
       $prevattempts=&start_data_table().&start_data_table_header_row();
       $prevattempts.='<th>'.&mt('History').'</th>';
-      my (%typeparts,%lasthidden);
+      my (%typeparts,%lasthidden,%regraded,%hidestatus);
       my $showsurv=&Apache::lonnet::allowed('vas',$env{'request.course.id'});
       foreach my $key (sort(keys(%lasthash))) {
 	my ($ign,@parts) = split(/\./,$key);
@@ -3728,6 +4482,18 @@ sub get_previous_attempt {
                       $lasthidden{$ign.'.'.$id} = 1;
                   }
               }
+              if ($identifier ne '') {
+                  my $id = join(',',@parts);
+                  if (&Apache::lonnet::EXT("resource.$id.problemstatus",$symb,
+                                               $domain,$username,$usec,undef,$course) =~ /^no/) {
+                      $hidestatus{$ign.'.'.$id} = 1;
+                  }
+              }
+          } elsif ($data eq 'regrader') {
+              if (($identifier ne '') && (@parts)) {
+                  my $id = join(',',@parts);
+                  $regraded{$ign.'.'.$id} = 1;
+              }
           } 
 	} else {
 	  if ($#parts == 0) {
@@ -3739,17 +4505,60 @@ sub get_previous_attempt {
       }
       $prevattempts.=&end_data_table_header_row();
       if ($getattempt eq '') {
+        my (%solved,%resets,%probstatus);
+        if (($identifier ne '') && (keys(%regraded) > 0)) {
+            for ($version=1;$version<=$returnhash{'version'};$version++) {
+                foreach my $id (keys(%regraded)) {
+                    if (($returnhash{$version.':'.$id.'.regrader'}) &&
+                        ($returnhash{$version.':'.$id.'.tries'} eq '') &&
+                        ($returnhash{$version.':'.$id.'.award'} eq '')) {
+                        push(@{$resets{$id}},$version);
+                    }
+                }
+            }
+        }
 	for ($version=1;$version<=$returnhash{'version'};$version++) {
-            my @hidden;
+            my (@hidden,@unsolved);
             if (%typeparts) {
                 foreach my $id (keys(%typeparts)) {
-                    if (($returnhash{$version.':'.$id.'.type'} eq 'anonsurvey') || ($returnhash{$version.':'.$id.'.type'} eq 'anonsurveycred')) {
+                    if (($returnhash{$version.':'.$id.'.type'} eq 'anonsurvey') || 
+                        ($returnhash{$version.':'.$id.'.type'} eq 'anonsurveycred')) {
                         push(@hidden,$id);
+                    } elsif ($identifier ne '') {
+                        unless (($returnhash{$version.':'.$id.'.type'} eq 'survey') ||
+                                ($returnhash{$version.':'.$id.'.type'} eq 'surveycred') ||
+                                ($hidestatus{$id})) {
+                            next if ((ref($resets{$id}) eq 'ARRAY') && grep(/^\Q$version\E$/,@{$resets{$id}}));
+                            if ($returnhash{$version.':'.$id.'.solved'} eq 'correct_by_student') {
+                                push(@{$solved{$id}},$version);
+                            } elsif (($returnhash{$version.':'.$id.'.solved'} ne '') &&
+                                     (ref($solved{$id}) eq 'ARRAY')) {
+                                my $skip;
+                                if (ref($resets{$id}) eq 'ARRAY') {
+                                    foreach my $reset (@{$resets{$id}}) {
+                                        if ($reset > $solved{$id}[-1]) {
+                                            $skip=1;
+                                            last;
+                                        }
+                                    }
+                                }
+                                unless ($skip) {
+                                    my ($ign,$partslist) = split(/\./,$id,2);
+                                    push(@unsolved,$partslist);
+                                }
+                            }
+                        }
                     }
                 }
             }
             $prevattempts.=&start_data_table_row().
-                           '<td>'.&mt('Transaction [_1]',$version).'</td>';
+                           '<td>'.&mt('Transaction [_1]',$version);
+            if (@unsolved) {
+                $prevattempts .= '<span class="LC_nobreak"><label>'.
+                                 '<input type="checkbox" name="HIDE'.$identifier.'" value="'.$version.':'.join('_',@unsolved).'" />'.
+                                 &mt('Hide').'</label></span>';
+            }
+            $prevattempts .= '</td>';
             if (@hidden) {
                 foreach my $key (sort(keys(%lasthash))) {
                     next if ($key =~ /\.foilorder$/);
@@ -3771,9 +4580,15 @@ sub get_previous_attempt {
                         }
                     } else {
                         if ($key =~ /\./) {
-                            my $value = &format_previous_attempt_value($key,
-                                              $returnhash{$version.':'.$key});
-                            $prevattempts.='<td>'.$value.'&nbsp;</td>';
+                            my $value = $returnhash{$version.':'.$key};
+                            if ($key =~ /\.rndseed$/) {
+                                my ($id) = ($key =~ /^(.+)\.[^.]+$/);
+                                if (exists($returnhash{$version.':'.$id.'.rawrndseed'})) {
+                                    $value = $returnhash{$version.':'.$id.'.rawrndseed'};
+                                }
+                            }
+                            $prevattempts.='<td>'.&format_previous_attempt_value($key,$value).
+                                           '&nbsp;</td>';
                         } else {
                             $prevattempts.='<td>&nbsp;</td>';
                         }
@@ -3782,9 +4597,15 @@ sub get_previous_attempt {
             } else {
 	        foreach my $key (sort(keys(%lasthash))) {
                     next if ($key =~ /\.foilorder$/);
-		    my $value = &format_previous_attempt_value($key,
-			            $returnhash{$version.':'.$key});
-		    $prevattempts.='<td>'.$value.'&nbsp;</td>';
+                    my $value = $returnhash{$version.':'.$key};
+                    if ($key =~ /\.rndseed$/) {
+                        my ($id) = ($key =~ /^(.+)\.[^.]+$/);
+                        if (exists($returnhash{$version.':'.$id.'.rawrndseed'})) {
+                            $value = $returnhash{$version.':'.$id.'.rawrndseed'};
+                        }
+                    }
+                    $prevattempts.='<td>'.&format_previous_attempt_value($key,$value).
+                                   '&nbsp;</td>';
 	        }
             }
 	    $prevattempts.=&end_data_table_row();
@@ -3809,7 +4630,7 @@ sub get_previous_attempt {
                       if ($key =~/$regexp$/ && (defined &$gradesub)) {
                           $value = &$gradesub($value);
                       }
-                      $prevattempts.='<td>'.$value.'&nbsp;</td>';
+                      $prevattempts.='<td>'. $value.'&nbsp;</td>';
                   } else {
                       $prevattempts.='<td>&nbsp;</td>';
                   }
@@ -3825,14 +4646,20 @@ sub get_previous_attempt {
 	      if ($key =~/$regexp$/ && (defined &$gradesub)) {
                   $value = &$gradesub($value);
               }
-	      $prevattempts.='<td>'.$value.'&nbsp;</td>';
+	     $prevattempts.='<td>'.$value.'&nbsp;</td>';
           }
       }
       $prevattempts.= &end_data_table_row().&end_data_table();
     } else {
+      my $msg;
+      if ($symb =~ /ext\.tool$/) {
+          $msg = &mt('No grade passed back.');
+      } else {
+          $msg = &mt('Nothing submitted - no attempts.');
+      }
       $prevattempts=
 	  &start_data_table().&start_data_table_row().
-	  '<td>'.&mt('Nothing submitted - no attempts.').'</td>'.
+	  '<td>'.$msg.'</td>'.
 	  &end_data_table_row().&end_data_table();
     }
   } else {
@@ -3846,11 +4673,13 @@ sub get_previous_attempt {
 sub format_previous_attempt_value {
     my ($key,$value) = @_;
     if (($key =~ /timestamp/) || ($key=~/duedate/)) {
-	$value = &Apache::lonlocal::locallocaltime($value);
+        $value = &Apache::lonlocal::locallocaltime($value);
     } elsif (ref($value) eq 'ARRAY') {
-	$value = '('.join(', ', @{ $value }).')';
+        $value = &HTML::Entities::encode('('.join(', ', @{ $value }).')','"<>&');
     } elsif ($key =~ /answerstring$/) {
         my %answers = &Apache::lonnet::str2hash($value);
+        my @answer = %answers;
+        %answers = map {&HTML::Entities::encode($_, '"<>&')} @answer;
         my @anskeys = sort(keys(%answers));
         if (@anskeys == 1) {
             my $answer = $answers{$anskeys[0]};
@@ -3873,7 +4702,7 @@ sub format_previous_attempt_value {
             } 
         }
     } else {
-	$value = &unescape($value);
+        $value = &HTML::Entities::encode(&unescape($value), '"<>&');
     }
     return $value;
 }
@@ -3935,6 +4764,9 @@ sub get_student_view {
   }
   if (defined($target)) { $form{'grade_target'} = $target; }
   $feedurl=&Apache::lonnet::clutter($feedurl);
+  if (($feedurl =~ /ext\.tool$/) && ($target eq 'tex')) {
+      $feedurl =~ s{^/adm/wrapper}{};
+  }
   my ($userview,$response)=&Apache::lonnet::ssi_body($feedurl,%form);
   $userview=~s/\<body[^\>]*\>//gi;
   $userview=~s/\<\/body\>//gi;
@@ -4234,23 +5066,20 @@ sub findallcourses {
 ###############################################
 
 sub blockcheck {
-    my ($setters,$activity,$uname,$udom,$url) = @_;
+    my ($setters,$activity,$uname,$udom,$url,$is_course) = @_;
 
-    if (!defined($udom)) {
+    if (defined($udom) && defined($uname)) {
+        # If uname and udom are for a course, check for blocks in the course.
+        if (($is_course) || (&Apache::lonnet::is_course($udom,$uname))) {
+            my ($startblock,$endblock,$triggerblock) =
+                &get_blocks($setters,$activity,$udom,$uname,$url);
+            return ($startblock,$endblock,$triggerblock);
+        }
+    } else {
         $udom = $env{'user.domain'};
-    }
-    if (!defined($uname)) {
         $uname = $env{'user.name'};
     }
 
-    # If uname and udom are for a course, check for blocks in the course.
-
-    if (&Apache::lonnet::is_course($udom,$uname)) {
-        my ($startblock,$endblock,$triggerblock) = 
-            &get_blocks($setters,$activity,$udom,$uname,$url);
-        return ($startblock,$endblock,$triggerblock);
-    }
-
     my $startblock = 0;
     my $endblock = 0;
     my $triggerblock = '';
@@ -4260,7 +5089,9 @@ sub blockcheck {
     # boards, chat or groups, check for blocking in current course only.
 
     if (($activity eq 'boards' || $activity eq 'chat' ||
-         $activity eq 'groups') && ($env{'request.course.id'})) {
+         $activity eq 'groups' || $activity eq 'printout' ||
+         $activity eq 'reinit' || $activity eq 'alert') &&
+        ($env{'request.course.id'})) {
         foreach my $key (keys(%live_courses)) {
             if ($key ne $env{'request.course.id'}) {
                 delete($live_courses{$key});
@@ -4343,7 +5174,7 @@ sub blockcheck {
                                                                 $tdom,$spec,$trest,$area);
                         }
                     }
-                    my ($author,$adv) = &Apache::lonnet::set_userprivs(\%userroles,\%allroles);
+                    my ($author,$adv,$rar) = &Apache::lonnet::set_userprivs(\%userroles,\%allroles);
                     if ($userroles{'user.priv.'.$checkrole} =~ /evb\&([^\:]*)/) {
                         if ($1) {
                             $no_userblock = 1;
@@ -4365,9 +5196,9 @@ sub blockcheck {
                  ($env{'request.role'} !~ m{^st\./\Q$cdom\E/\Q$cnum\E}));
         next if ($no_userblock);
 
-        # Retrieve blocking times and identity of locker for course
+        # Retrieve blocking times and identity of blocker for course
         # of specified user, unless user has 'evb' privilege.
-        
+
         my ($start,$end,$trigger) = 
             &get_blocks($setters,$activity,$cdom,$cnum,$url);
         if (($start != 0) && 
@@ -4454,13 +5285,19 @@ sub get_blocks {
                 my $end = $start + $env{'course.'.$cdom.'_'.$cnum.'.timerinterval.'.$timersymb}; 
                 if ($start && $end) {
                     if (($start <= time) && ($end >= time)) {
-                        unless (grep(/^\Q$block\E$/,@blockers)) {
-                            push(@blockers,$block);
-                            $triggered{$block} = {
-                                                   start => $start,
-                                                   end   => $end,
-                                                   type  => $type,
-                                                 };
+                        if (ref($commblocks{$block}) eq 'HASH') {
+                            if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
+                                if ($commblocks{$block}{'blocks'}{$activity} eq 'on') {
+                                    unless(grep(/^\Q$block\E$/,@blockers)) {
+                                        push(@blockers,$block);
+                                        $triggered{$block} = {
+                                                               start => $start,
+                                                               end   => $end,
+                                                               type  => $type,
+                                                             };
+                                    }
+                                }
+                            }
                         }
                     }
                 }
@@ -4524,12 +5361,12 @@ sub parse_block_record {
 }
 
 sub blocking_status {
-    my ($activity,$uname,$udom,$url) = @_;
+    my ($activity,$uname,$udom,$url,$is_course) = @_;
     my %setters;
 
 # check for active blocking
     my ($startblock,$endblock,$triggerblock) = 
-        &blockcheck(\%setters,$activity,$uname,$udom,$url);
+        &blockcheck(\%setters,$activity,$uname,$udom,$url,$is_course);
     my $blocked = 0;
     if ($startblock && $endblock) {
         $blocked = 1;
@@ -4541,9 +5378,9 @@ sub blocking_status {
 # build a link to a popup window containing the details
     my $querystring  = "?activity=$activity";
 # $uname and $udom decide whose portfolio the user is trying to look at
-    if ($activity eq 'port') {
-        $querystring .= "&amp;udom=$udom"      if $udom;
-        $querystring .= "&amp;uname=$uname"    if $uname;
+    if (($activity eq 'port') || ($activity eq 'passwd')) {
+        $querystring .= "&amp;udom=$udom"      if ($udom =~ /^$match_domain$/); 
+        $querystring .= "&amp;uname=$uname"    if ($uname =~ /^$match_username$/);
     } elsif ($activity eq 'docs') {
         $querystring .= '&amp;url='.&HTML::Entities::encode($url,'&"');
     }
@@ -4562,13 +5399,21 @@ END_MYBLOCK
   
     my $popupUrl = "/adm/blockingstatus/$querystring";
     my $text = &mt('Communication Blocked');
+    my $class = 'LC_comblock';
     if ($activity eq 'docs') {
         $text = &mt('Content Access Blocked');
+        $class = '';
     } elsif ($activity eq 'printout') {
         $text = &mt('Printing Blocked');
+    } elsif ($activity eq 'passwd') {
+        $text = &mt('Password Changing Blocked');
+    } elsif ($activity eq 'alert') {
+        $text = &mt('Checking Critical Messages Blocked');
+    } elsif ($activity eq 'reinit') {
+        $text = &mt('Checking Course Update Blocked');
     }
     $output .= <<"END_BLOCK";
-<div class='LC_comblock'>
+<div class='$class'>
   <a onclick='openWindow("$popupUrl","Blocking Table",600,300,"no","no");return false;' href='/adm/blockingstatus/$querystring'
   title='$text'>
   <img class='LC_noBorder LC_middle' title='$text' src='/res/adm/pages/comblock.png' alt='$text'/></a>
@@ -4584,22 +5429,44 @@ END_BLOCK
 ###############################################
 
 sub check_ip_acc {
-    my ($acc)=@_;
+    my ($acc,$clientip)=@_;
     &Apache::lonxml::debug("acc is $acc");
     if (!defined($acc) || $acc =~ /^\s*$/ || $acc =~/^\s*no\s*$/i) {
         return 1;
     }
-    my $allowed=0;
-    my $ip=$env{'request.host'} || $ENV{'REMOTE_ADDR'};
+    my $allowed;
+    my $ip=$ENV{'REMOTE_ADDR'} || $clientip || $env{'request.host'};
 
     my $name;
-    foreach my $pattern (split(',',$acc)) {
-        $pattern =~ s/^\s*//;
-        $pattern =~ s/\s*$//;
+    my %access = (
+                     allowfrom => 1,
+                     denyfrom  => 0,
+                 );
+    my @allows;
+    my @denies;
+    foreach my $item (split(',',$acc)) {
+        $item =~ s/^\s*//;
+        $item =~ s/\s*$//;
+        my $pattern;
+        if ($item =~ /^\!(.+)$/) {
+            push(@denies,$1);
+        } else {
+            push(@allows,$item);
+        }
+   }
+   my $numdenies = scalar(@denies);
+   my $numallows = scalar(@allows);
+   my $count = 0;
+   foreach my $pattern (@denies,@allows) {
+        $count ++; 
+        my $acctype = 'allowfrom';
+        if ($count <= $numdenies) {
+            $acctype = 'denyfrom';
+        }
         if ($pattern =~ /\*$/) {
             #35.8.*
             $pattern=~s/\*//;
-            if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
+            if ($ip =~ /^\Q$pattern\E/) { $allowed=$access{$acctype}; }
         } elsif ($pattern =~ /(\d+\.\d+\.\d+)\.\[(\d+)-(\d+)\]$/) {
             #35.8.3.[34-56]
             my $low=$2;
@@ -4607,7 +5474,7 @@ sub check_ip_acc {
             $pattern=$1;
             if ($ip =~ /^\Q$pattern\E/) {
                 my $last=(split(/\./,$ip))[3];
-                if ($last <=$high && $last >=$low) { $allowed=1; }
+                if ($last <=$high && $last >=$low) { $allowed=$access{$acctype}; }
             }
         } elsif ($pattern =~ /^\*/) {
             #*.msu.edu
@@ -4617,10 +5484,10 @@ sub check_ip_acc {
                 my $netaddr=inet_aton($ip);
                 ($name)=gethostbyaddr($netaddr,AF_INET);
             }
-            if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
+            if ($name =~ /\Q$pattern\E$/i) { $allowed=$access{$acctype}; }
         } elsif ($pattern =~ /\d+\.\d+\.\d+\.\d+/) {
             #127.0.0.1
-            if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
+            if ($ip =~ /^\Q$pattern\E/) { $allowed=$access{$acctype}; }
         } else {
             #some.name.com
             if (!defined($name)) {
@@ -4628,9 +5495,16 @@ sub check_ip_acc {
                 my $netaddr=inet_aton($ip);
                 ($name)=gethostbyaddr($netaddr,AF_INET);
             }
-            if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
+            if ($name =~ /\Q$pattern\E$/i) { $allowed=$access{$acctype}; }
+        }
+        if ($allowed =~ /^(0|1)$/) { last; }
+    }
+    if ($allowed eq '') {
+        if ($numdenies && !$numallows) {
+            $allowed = 1;
+        } else {
+            $allowed = 0;
         }
-        if ($allowed) { last; }
     }
     return $allowed;
 }
@@ -4686,23 +5560,29 @@ sub get_domainconf {
             if (keys(%{$domconfig{'login'}})) {
                 foreach my $key (keys(%{$domconfig{'login'}})) {
                     if (ref($domconfig{'login'}{$key}) eq 'HASH') {
-                        if ($key eq 'loginvia') {
-                            if (ref($domconfig{'login'}{'loginvia'}) eq 'HASH') {
-                                foreach my $hostname (keys(%{$domconfig{'login'}{'loginvia'}})) {
-                                    if (ref($domconfig{'login'}{'loginvia'}{$hostname}) eq 'HASH') {
-                                        if ($domconfig{'login'}{'loginvia'}{$hostname}{'server'}) {
-                                            my $server = $domconfig{'login'}{'loginvia'}{$hostname}{'server'};
-                                            $designhash{$udom.'.login.loginvia'} = $server;
-                                            if ($domconfig{'login'}{'loginvia'}{$hostname}{'serverpath'} eq 'custom') {
-
-                                                $designhash{$udom.'.login.loginvia_'.$hostname} = $server.':'.$domconfig{'login'}{'loginvia'}{$hostname}{'custompath'};
-                                            } else {
-                                                $designhash{$udom.'.login.loginvia_'.$hostname} = $server.':'.$domconfig{'login'}{'loginvia'}{$hostname}{'serverpath'};
+                        if (($key eq 'loginvia') || ($key eq 'headtag')) {
+                            if (ref($domconfig{'login'}{$key}) eq 'HASH') {
+                                foreach my $hostname (keys(%{$domconfig{'login'}{$key}})) {
+                                    if (ref($domconfig{'login'}{$key}{$hostname}) eq 'HASH') {
+                                        if ($key eq 'loginvia') {
+                                            if ($domconfig{'login'}{'loginvia'}{$hostname}{'server'}) {
+                                                my $server = $domconfig{'login'}{'loginvia'}{$hostname}{'server'};
+                                                $designhash{$udom.'.login.loginvia'} = $server;
+                                                if ($domconfig{'login'}{'loginvia'}{$hostname}{'serverpath'} eq 'custom') {
+
+                                                    $designhash{$udom.'.login.loginvia_'.$hostname} = $server.':'.$domconfig{'login'}{'loginvia'}{$hostname}{'custompath'};
+                                                } else {
+                                                    $designhash{$udom.'.login.loginvia_'.$hostname} = $server.':'.$domconfig{'login'}{'loginvia'}{$hostname}{'serverpath'};
+                                                }
                                             }
-                                            if ($domconfig{'login'}{'loginvia'}{$hostname}{'exempt'}) {
-                                                $designhash{$udom.'.login.loginvia_exempt_'.$hostname} = $domconfig{'login'}{'loginvia'}{$hostname}{'exempt'};
+                                        } elsif ($key eq 'headtag') {
+                                            if ($domconfig{'login'}{'headtag'}{$hostname}{'url'}) {
+                                                $designhash{$udom.'.login.headtag_'.$hostname} = $domconfig{'login'}{'headtag'}{$hostname}{'url'};
                                             }
                                         }
+                                        if ($domconfig{'login'}{$key}{$hostname}{'exempt'}) {
+                                            $designhash{$udom.'.login.'.$key.'_exempt_'.$hostname} = $domconfig{'login'}{$key}{$hostname}{'exempt'};
+                                        }
                                     }
                                 }
                             }
@@ -4770,7 +5650,7 @@ sub get_legacy_domconf {
     my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
     my $designfile =  $designdir.'/'.$udom.'.tab';
     if (-e $designfile) {
-        if ( open (my $fh,"<$designfile") ) {
+        if ( open (my $fh,'<',$designfile) ) {
             while (my $line = <$fh>) {
                 next if ($line =~ /^\#/);
                 chomp($line);
@@ -4959,13 +5839,28 @@ sub CSTR_pageheader {
         $lastitem = $thisdisfn;
     }
 
+    my ($crsauthor,$title);
+    if (($env{'request.course.id'}) &&
+        ($env{'course.'.$env{'request.course.id'}.'.num'} eq $uname) &&
+        ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom)) {
+        $crsauthor = 1;
+        $title = &mt('Course Authoring Space');
+    } else {
+        $title = &mt('Authoring Space');
+    }
+
+    my ($target,$crumbtarget) = (' target="_top"','_top'); #FIXME lonpubdir: target="_parent"
+    if (($env{'request.lti.login'}) && ($env{'request.lti.target'} eq 'iframe')) {
+        $target = '';
+        $crumbtarget = '';
+    }
+
     my $output =
          '<div>'
         .&Apache::loncommon::help_open_menu('','',3,'Authoring') #FIXME: Broken? Where is it?
-        .'<b>'.&mt('Authoring Space:').'</b> '
-        .'<form name="dirs" method="post" action="'.$formaction
-        .'" target="_top">' #FIXME lonpubdir: target="_parent"
-        .&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,'_top','/priv/'.$udom,undef,undef);
+        .'<b>'.$title.'</b> '
+        .'<form name="dirs" method="post" action="'.$formaction.'"'.$target.'>'
+        .&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,$crumbtarget,'/priv/'.$udom,undef,undef);
 
     if ($lastitem) {
         $output .=
@@ -4973,13 +5868,18 @@ sub CSTR_pageheader {
             .$lastitem
             .'</span>';
     }
-    $output .=
-         '<br />'
-        #FIXME lonpubdir: &Apache::lonhtmlcommon::crumbs($uname.$thisdisfn.'/','_top','/priv','','+1',1)."</b></tt><br />"
-        .&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')
-        .'</form>'
-        .&Apache::lonmenu::constspaceform()
-        .'</div>';
+
+    if ($crsauthor) {
+        $output .= '</form>'.&Apache::lonmenu::constspaceform();
+    } else {
+        $output .=
+             '<br />'
+            #FIXME lonpubdir: &Apache::lonhtmlcommon::crumbs($uname.$thisdisfn.'/',$crumbtarget,'/priv','','+1',1)."</b></tt><br />"
+            .&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')
+            .'</form>'
+            .&Apache::lonmenu::constspaceform();
+    }
+    $output .= '</div>';
 
     return $output;
 }
@@ -5021,19 +5921,30 @@ Inputs:
 
 =item * $bgcolor, used to override the bgcolor on a webpage to a specific value
 
-=item * $no_inline_link, if true and in remote mode, don't show the
-         'Switch To Inline Menu' link
-
 =item * $args, optional argument valid values are
             no_auto_mt_title -> prevents &mt()ing the title arg
-            inherit_jsmath -> when creating popup window in a page,
-                              should it have jsmath forced on by the
-                              current page
+            use_absolute     -> for external resource or syllabus, this will
+                                contain https://<hostname> if server uses
+                                https (as per hosts.tab), but request is for http
+            hostname         -> hostname, from $r->hostname().
 
 =item * $advtoolsref, optional argument, ref to an array containing
             inlineremote items to be added in "Functions" menu below
             breadcrumbs.
 
+=item * $ltiscope, optional argument, will be one of: resource, map or
+            course, if LON-CAPA is in LTI Provider context. Value is
+            the scope of use, i.e., launch was for access to a single, a map
+            or the entire course.
+
+=item * $ltiuri, optional argument, if LON-CAPA is in LTI Provider
+            context, this will contain the URL for the landing item in
+            the course, after launch from an LTI Consumer
+
+=item * $ltimenu, optional argument, if LON-CAPA is in LTI Provider
+            context, this will contain a reference to hash of items
+            to be included in the page header and/or inline menu.
+
 =back
 
 Returns: A uniform header for LON-CAPA web pages.  
@@ -5045,7 +5956,7 @@ other decorations will be returned.
 
 sub bodytag {
     my ($title,$function,$addentries,$bodyonly,$domain,$forcereg,
-        $no_nav_bar,$bgcolor,$no_inline_link,$args,$advtoolsref)=@_;
+        $no_nav_bar,$bgcolor,$args,$advtoolsref,$ltiscope,$ltiuri,$ltimenu)=@_;
 
     my $public;
     if ((($env{'user.name'} eq 'public') && ($env{'user.domain'} eq 'public'))
@@ -5054,6 +5965,7 @@ sub bodytag {
     }
     if (!$args->{'no_auto_mt_title'}) { $title = &mt($title); }
     my $httphost = $args->{'use_absolute'};
+    my $hostname = $args->{'hostname'};
 
     $function = &get_users_function() if (!$function);
     my $img =    &designparm($function.'.img',$domain);
@@ -5081,6 +5993,14 @@ sub bodytag {
     if ($env{'request.course.id'}) {
         if ($env{'request.role'} !~ /^cr/) {
             $role = &Apache::lonnet::plaintext($role,&course_type());
+        } elsif ($role =~ m{^cr/($match_domain)/\1-domainconfig/(\w+)$}) {
+            if ($env{'request.role.desc'}) {
+                $role = $env{'request.role.desc'};
+            } else {
+                $role = &mt('Helpdesk[_1]','&nbsp;'.$2);
+            }
+        } else {
+            $role = (split(/\//,$role,4))[-1]; 
         }
         if ($env{'request.course.sec'}) {
             $role .= ('&nbsp;'x2).'-&nbsp;'.&mt('section:').'&nbsp;'.$env{'request.course.sec'};
@@ -5096,7 +6016,7 @@ sub bodytag {
 
 # construct main body tag
     my $bodytag = "<body $extra_body_attr>".
-	&Apache::lontexconvert::init_math_support($args->{'inherit_jsmath'});
+	&Apache::lontexconvert::init_math_support();
 
     &get_unprocessed_cgi($ENV{'QUERY_STRING'}, ['inhibitmenu']);
 
@@ -5107,7 +6027,18 @@ sub bodytag {
     if ($public) {
 	undef($role);
     }
-    
+
+    if (($env{'request.course.id'}) && ($env{'request.lti.login'})) {
+        if (ref($ltimenu) eq 'HASH') {
+            unless ($ltimenu->{'role'}) {
+                undef($role);
+            }
+            unless ($ltimenu->{'coursetitle'}) {
+                $realm='&nbsp;';
+            }
+        }
+    }
+
     my $titleinfo = '<h1>'.$title.'</h1>';
     #
     # Extra info if you are the DC
@@ -5120,25 +6051,19 @@ sub bodytag {
         $dc_info =~ s/\s+$//;
     }
 
-    $role = '<span class="LC_nobreak">('.$role.')</span>' if $role;
-
-    if ($env{'request.state'} eq 'construct') { $forcereg=1; }
-
-
-
-    my $funclist;
-    if (($env{'environment.remote'} eq 'on') && ($env{'request.state'} ne 'construct')) {
-        $bodytag .= Apache::lonhtmlcommon::scripttag(Apache::lonmenu::utilityfunctions($httphost), 'start')."\n".
-                    Apache::lonmenu::serverform();
-        my $forbodytag;
-        &Apache::lonmenu::prepare_functions($env{'request.noversionuri'},
-                                            $forcereg,$args->{'group'},
-                                            $args->{'bread_crumbs'},
-                                            $advtoolsref,'',\$forbodytag);
-        unless (ref($args->{'bread_crumbs'}) eq 'ARRAY') {
-            $funclist = $forbodytag;
-        }
+    my $crstype;
+    if ($env{'request.course.id'}) {
+        $crstype = $env{'course.'.$env{'request.course.id'}.'.type'};
+    } elsif ($args->{'crstype'}) {
+        $crstype = $args->{'crstype'};
+    }
+    if (($crstype eq 'Placement') && (!$env{'request.role.adv'})) {
+        undef($role);
     } else {
+        $role = '<span class="LC_nobreak">('.$role.')</span>' if ($role && !$env{'browser.mobile'});
+    }
+
+        if ($env{'request.state'} eq 'construct') { $forcereg=1; }
 
         #    if ($env{'request.state'} eq 'construct') {
         #        $titleinfo = &CSTR_pageheader(); #FIXME: Will be removed once all scripts have their own calls
@@ -5147,52 +6072,56 @@ sub bodytag {
         $bodytag .= Apache::lonhtmlcommon::scripttag(
             Apache::lonmenu::utilityfunctions($httphost), 'start');
 
-        my ($left,$right) = Apache::lonmenu::primary_menu();
+        unless ($args->{'no_primary_menu'}) {
+            my ($left,$right) = Apache::lonmenu::primary_menu($crstype,$ltimenu);
 
-        if ($env{'request.noversionuri'} =~ m{^/res/adm/pages/}) {
-            if ($dc_info) {
-                 $dc_info = qq|<span class="LC_cusr_subheading">$dc_info</span>|;
+            if ($env{'request.noversionuri'} =~ m{^/res/adm/pages/}) {
+                if ($dc_info) {
+                    $dc_info = qq|<span class="LC_cusr_subheading">$dc_info</span>|;
+                }
+                $bodytag .= qq|<div id="LC_nav_bar">$left $role<br />
+                               <em>$realm</em> $dc_info</div>|;
+                return $bodytag;
             }
-            $bodytag .= qq|<div id="LC_nav_bar">$left $role<br />
-                           <em>$realm</em> $dc_info</div>|;
-            return $bodytag;
-        }
 
-        unless ($env{'request.symb'} =~ m/\.page___\d+___/) {
-            $bodytag .= qq|<div id="LC_nav_bar">$left $role</div>|;
-        }
+            unless ($env{'request.symb'} =~ m/\.page___\d+___/) {
+                $bodytag .= qq|<div id="LC_nav_bar">$left $role</div>|;
+            }
 
-        $bodytag .= $right;
+            $bodytag .= $right;
 
-        if ($dc_info) {
-            $dc_info = &dc_courseid_toggle($dc_info);
+            if ($dc_info) {
+                $dc_info = &dc_courseid_toggle($dc_info);
+            }
+            $bodytag .= qq|<div id="LC_realm">$realm $dc_info</div>|;
         }
-        $bodytag .= qq|<div id="LC_realm">$realm $dc_info</div>|;
 
-        #if directed to not display the secondary menu, don't.
+        #if directed to not display the secondary menu, don't.  
         if ($args->{'no_secondary_menu'}) {
             return $bodytag;
         }
         #don't show menus for public users
         if (!$public){
-            $bodytag .= Apache::lonmenu::secondary_menu($httphost);
+            unless ($args->{'no_inline_menu'}) {
+                $bodytag .= Apache::lonmenu::secondary_menu($httphost,$ltiscope,$ltimenu,
+                                                            $args->{'no_primary_menu'});
+            }
             $bodytag .= Apache::lonmenu::serverform();
             $bodytag .= Apache::lonhtmlcommon::scripttag('', 'end');
             if ($env{'request.state'} eq 'construct') {
                 $bodytag .= &Apache::lonmenu::innerregister($forcereg,
-                                $args->{'bread_crumbs'});
-            } elsif ($forcereg) { 
+                                $args->{'bread_crumbs'},'','',$hostname,$ltiscope,$ltiuri);
+            } elsif ($forcereg) {
                 $bodytag .= &Apache::lonmenu::innerregister($forcereg,undef,
-                                                            $args->{'group'});
+                                                            $args->{'group'},
+                                                            $args->{'hide_buttons'},
+                                                            $hostname,$ltiscope,$ltiuri);
             } else {
-                my $forbodytag;
-                &Apache::lonmenu::prepare_functions($env{'request.noversionuri'},
-                                                    $forcereg,$args->{'group'},
-                                                    $args->{'bread_crumbs'},
-                                                    $advtoolsref,'',\$forbodytag);
-                unless (ref($args->{'bread_crumbs'}) eq 'ARRAY') {
-                    $bodytag .= $forbodytag;
-                }
+                $bodytag .= 
+                    &Apache::lonmenu::prepare_functions($env{'request.noversionuri'},
+                                                        $forcereg,$args->{'group'},
+                                                        $args->{'bread_crumbs'},
+                                                        $advtoolsref,'',$hostname);
             }
         }else{
             # this is to seperate menu from content when there's no secondary
@@ -5202,54 +6131,6 @@ sub bodytag {
         }
 
         return $bodytag;
-    }
-
-#
-# Top frame rendering, Remote is up
-#
-
-    my $imgsrc = $img;
-    if ($img =~ /^\/adm/) {
-        $imgsrc = &lonhttpdurl($img);
-    }
-    my $upperleft='<img src="'.$imgsrc.'" alt="'.$function.'" />';
-
-    my $help=($no_inline_link?''
-              :&Apache::loncommon::top_nav_help('Help'));
-
-    # Explicit link to get inline menu
-    my $menu= ($no_inline_link?''
-               :'<a href="/adm/remote?action=collapse" target="_top">'.&mt('Switch to Inline Menu Mode').'</a>');
-
-    if ($dc_info) {
-        $dc_info = qq|<span class="LC_cusr_subheading">($dc_info)</span>|;
-    }
-
-    my $name = &plainname($env{'user.name'},$env{'user.domain'});
-    unless ($public) {
-        $name = &aboutmewrapper($name,$env{'user.name'},$env{'user.domain'},
-                                undef,'LC_menubuttons_link');
-    }
-
-    unless ($env{'form.inhibitmenu'}) {
-        $bodytag .= qq|<div id="LC_nav_bar">$name $role</div>
-                       <ol class="LC_primary_menu LC_floatright LC_right">
-                       <li>$help</li>
-                       <li>$menu</li>
-                       </ol><div id="LC_realm"> $realm $dc_info</div>|;
-    }
-    if ($env{'request.state'} eq 'construct') {
-        if (!$public){
-            if ($env{'request.state'} eq 'construct') {
-                $funclist = &Apache::lonhtmlcommon::scripttag(
-                                &Apache::lonmenu::utilityfunctions($httphost), 'start').
-                            &Apache::lonhtmlcommon::scripttag('','end').
-                            &Apache::lonmenu::innerregister($forcereg,
-                                                            $args->{'bread_crumbs'});
-            }
-        }
-    }
-    return $bodytag."\n".$funclist;
 }
 
 sub dc_courseid_toggle {
@@ -5281,15 +6162,8 @@ sub make_attr_string {
 		delete($attr_ref->{$key});
 	    }
 	}
-        if ($env{'environment.remote'} eq 'on') {
-            $attr_ref->{'onload'}  =
-                &Apache::lonmenu::loadevents().  $on_load;
-            $attr_ref->{'onunload'}=
-                &Apache::lonmenu::unloadevents().$on_unload;
-        } else {  
-	    $attr_ref->{'onload'}  = $on_load;
-	    $attr_ref->{'onunload'}= $on_unload;
-        }
+	$attr_ref->{'onload'}  = $on_load;
+	$attr_ref->{'onunload'}= $on_unload;
     }
 
     my $attr_string;
@@ -5323,7 +6197,6 @@ sub endbodytag {
     unless ((ref($args) eq 'HASH') && ($args->{'notbody'})) {
         $endbodytag='</body>';
     }
-    $endbodytag=&Apache::lontexconvert::jsMath_process()."\n".$endbodytag;
     if ( exists( $env{'internal.head.redirect'} ) ) {
         if (!(ref($args) eq 'HASH' && $args->{'noredirectlink'})) {
 	    $endbodytag=
@@ -5498,6 +6371,17 @@ div.LC_confirm_box .LC_success img {
   vertical-align: middle;
 }
 
+.LC_maxwidth {
+  max-width: 100%;
+  height: auto;
+}
+
+.LC_textsize_mobile {
+  \@media only screen and (max-device-width: 480px) {
+      -webkit-text-size-adjust:100%; -moz-text-size-adjust:100%; -ms-text-size-adjust:100%;
+  }
+}
+
 .LC_icon {
   border: none;
   vertical-align: middle;
@@ -5603,6 +6487,12 @@ ul.LC_breadcrumb_tools_outerlist li {
     float: right;
 }
 
+.LC_placement_prog {
+    padding-right: 20px;
+    font-weight: bold;
+    font-size: 90%;
+}
+
 table#LC_title_bar td {
   background: $tabbg;
 }
@@ -5619,6 +6509,10 @@ table#LC_menubuttons img {
   vertical-align: middle;
 }
 
+.LC_breadcrumbs_hoverable {
+  background: $sidebg;
+}
+
 td.LC_table_cell_checkbox {
   text-align: center;
 }
@@ -5689,6 +6583,11 @@ td.LC_menubuttons_text {
   background: $tabbg;
 }
 
+td.LC_zero_height {
+  line-height: 0; 
+  cellpadding: 0;
+}
+
 table.LC_data_table {
   border: 1px solid #000000;
   border-collapse: separate;
@@ -6010,6 +6909,12 @@ td.LC_parm_overview_restrictions  {
   border-collapse: collapse;
 }
 
+span.LC_parm_recursive,
+td.LC_parm_recursive {
+  font-weight: bold;
+  font-size: smaller;
+}
+
 table.LC_parm_overview_restrictions td {
   border-width: 1px 4px 1px 4px;
   border-style: solid;
@@ -6361,6 +7266,12 @@ table.LC_data_table tr > td.LC_docs_entr
   color: #990000;
 }
 
+.LC_docs_alias {
+  color: #440055;  
+}
+
+.LC_domprefs_email,
+.LC_docs_alias_name,
 .LC_docs_reinit_warn,
 .LC_docs_ext_edit {
   font-size: x-small;
@@ -6476,7 +7387,7 @@ div.LC_edit_problem_footer,
 div.LC_edit_problem_footer div,
 div.LC_edit_problem_editxml_header,
 div.LC_edit_problem_editxml_header div {
-  margin-top: 5px;
+  z-index: 100;
 }
 
 div.LC_edit_problem_header_title {
@@ -6492,14 +7403,17 @@ table.LC_edit_problem_header_title {
   background: $tabbg;
 }
 
-div.LC_edit_problem_discards {
-  float: left;
-  padding-bottom: 5px;
+div.LC_edit_actionbar {
+    background-color: $sidebg;
+    margin: 0;
+    padding: 0;
+    line-height: 200%;
 }
 
-div.LC_edit_problem_saves {
-  float: right;
-  padding-bottom: 5px;
+div.LC_edit_actionbar div{
+    padding: 0;
+    margin: 0;
+    display: inline-block;
 }
 
 .LC_edit_opt {
@@ -6515,6 +7429,10 @@ div.LC_edit_problem_saves {
     margin-left: 40px;
 }
 
+#LC_edit_problem_codemirror div{
+    margin-left: 0px;
+}
+
 img.stift {
   border-width: 0;
   vertical-align: middle;
@@ -6602,6 +7520,10 @@ fieldset {
   /* overflow: hidden; */
 }
 
+article.geogebraweb div {
+    margin: 0;
+}
+
 fieldset > legend {
   font-weight: bold;
   padding: 0 5px 0 5px;
@@ -6629,7 +7551,6 @@ fieldset > legend {
 ol.LC_primary_menu {
   margin: 0;
   padding: 0;
-  background-color: $pgbg_or_bgcolor;
 }
 
 ol#LC_PathBreadcrumbs {
@@ -6641,23 +7562,48 @@ ol.LC_primary_menu li {
   vertical-align: middle;
   text-align: left;
   list-style: none;
+  position: relative;
   float: left;
+  z-index: 100; /* will be displayed above codemirror and underneath the help-layer */
+  line-height: 1.5em;
 }
 
-ol.LC_primary_menu li a {
+ol.LC_primary_menu li a,
+ol.LC_primary_menu li p {
   display: block;
   margin: 0;
   padding: 0 5px 0 10px;
   text-decoration: none;
 }
 
-ol.LC_primary_menu li ul {
+ol.LC_primary_menu li p span.LC_primary_menu_innertitle {
+  display: inline-block;
+  width: 95%;
+  text-align: left;
+}
+
+ol.LC_primary_menu li p span.LC_primary_menu_innerarrow {
+  display: inline-block;	
+  width: 5%;
+  float: right;
+  text-align: right;
+  font-size: 70%;
+}
+
+ol.LC_primary_menu ul {
   display: none;
-  width: 10em;
+  width: 15em;
   background-color: $data_table_light;
+  position: absolute;
+  top: 100%;
+}
+
+ol.LC_primary_menu ul ul {
+  left: 100%;
+  top: 0;
 }
 
-ol.LC_primary_menu li:hover ul, ol.LC_primary_menu li.hover ul {
+ol.LC_primary_menu li:hover > ul, ol.LC_primary_menu li.hover > ul {
   display: block;
   position: absolute;
   margin: 0;
@@ -6666,15 +7612,21 @@ ol.LC_primary_menu li:hover ul, ol.LC_pr
 }
 
 ol.LC_primary_menu li:hover li, ol.LC_primary_menu li.hover li {
+/* First Submenu -> size should be smaller than the menu title of the whole menu */
   font-size: 90%;
   vertical-align: top;
   float: none;
   border-left: 1px solid black;
   border-right: 1px solid black;
+/* A dark bottom border to visualize different menu options; 
+overwritten in the create_submenu routine for the last border-bottom of the menu */
+  border-bottom: 1px solid $data_table_dark; 
 }
 
-ol.LC_primary_menu li:hover li a, ol.LC_primary_menu li.hover li a {
-  background-color:$data_table_light;
+ol.LC_primary_menu li li p:hover {
+  color:$button_hover;
+  text-decoration:none;
+  background-color:$data_table_dark;
 }
 
 ol.LC_primary_menu li li a:hover {
@@ -6682,6 +7634,11 @@ ol.LC_primary_menu li li a:hover {
    background-color:$data_table_dark;
 }
 
+/* Font-size equal to the size of the predecessors*/
+ol.LC_primary_menu li:hover li li {
+  font-size: 100%;
+}
+
 ol.LC_primary_menu li img {
   vertical-align: bottom;
   height: 1.1em;
@@ -6738,7 +7695,6 @@ ul#LC_secondary_menu li {
   font-weight: bold;
   line-height: 1.8em;
   border-right: 1px solid black;
-  vertical-align: middle;
   float: left;
 }
 
@@ -7225,6 +8181,16 @@ ul.LC_funclist li {
 }
 
 /*
+  styles used for response display
+*/
+div.LC_radiofoil, div.LC_rankfoil {
+  margin: .5em 0em .5em 0em;
+}
+table.LC_itemgroup {
+  margin-top: 1em;
+}
+
+/*
   styles used by TTH when "Default set of options to pass to tth/m
   when converting TeX" in course settings has been set
 
@@ -7245,6 +8211,120 @@ span.roman {font-family: serif; font-sty
 span.overacc2 {position: relative;  left: .8em; top: -1.2ex;}
 span.overacc1 {position: relative;  left: .6em; top: -1.2ex;}
 
+/*
+  sections with roles, for content only
+*/
+section[class^="role-"] {
+  padding-left: 10px;
+  padding-right: 5px;
+  margin-top: 8px;
+  margin-bottom: 8px;
+  border: 1px solid #2A4;
+  border-radius: 5px;
+  box-shadow: 0px 1px 1px #BBB;
+}
+section[class^="role-"]>h1 {
+  position: relative;
+  margin: 0px;
+  padding-top: 10px;
+  padding-left: 40px;
+}
+section[class^="role-"]>h1:before {
+  position: absolute;
+  left: -5px;
+  top: 5px;
+}
+section.role-activity>h1:before {
+  content:url('/adm/daxe/images/section_icons/activity.png');
+}
+section.role-advice>h1:before {
+  content:url('/adm/daxe/images/section_icons/advice.png');
+}
+section.role-bibliography>h1:before {
+  content:url('/adm/daxe/images/section_icons/bibliography.png');
+}
+section.role-citation>h1:before {
+  content:url('/adm/daxe/images/section_icons/citation.png');
+}
+section.role-conclusion>h1:before {
+  content:url('/adm/daxe/images/section_icons/conclusion.png');
+}
+section.role-definition>h1:before {
+  content:url('/adm/daxe/images/section_icons/definition.png');
+}
+section.role-demonstration>h1:before {
+  content:url('/adm/daxe/images/section_icons/demonstration.png');
+}
+section.role-example>h1:before {
+  content:url('/adm/daxe/images/section_icons/example.png');
+}
+section.role-explanation>h1:before {
+  content:url('/adm/daxe/images/section_icons/explanation.png');
+}
+section.role-introduction>h1:before {
+  content:url('/adm/daxe/images/section_icons/introduction.png');
+}
+section.role-method>h1:before {
+  content:url('/adm/daxe/images/section_icons/method.png');
+}
+section.role-more_information>h1:before {
+  content:url('/adm/daxe/images/section_icons/more_information.png');
+}
+section.role-objectives>h1:before {
+  content:url('/adm/daxe/images/section_icons/objectives.png');
+}
+section.role-prerequisites>h1:before {
+  content:url('/adm/daxe/images/section_icons/prerequisites.png');
+}
+section.role-remark>h1:before {
+  content:url('/adm/daxe/images/section_icons/remark.png');
+}
+section.role-reminder>h1:before {
+  content:url('/adm/daxe/images/section_icons/reminder.png');
+}
+section.role-summary>h1:before {
+  content:url('/adm/daxe/images/section_icons/summary.png');
+}
+section.role-syntax>h1:before {
+  content:url('/adm/daxe/images/section_icons/syntax.png');
+}
+section.role-warning>h1:before {
+  content:url('/adm/daxe/images/section_icons/warning.png');
+}
+
+#LC_minitab_header {
+  float:left;
+  width:100%;
+  background:#DAE0D2 url("/res/adm/pages/minitabmenu_bg.gif") repeat-x bottom;
+  font-size:93%;
+  line-height:normal;
+  margin: 0.5em 0 0.5em 0;
+}
+#LC_minitab_header ul {
+  margin:0;
+  padding:10px 10px 0;
+  list-style:none;
+}
+#LC_minitab_header li {
+  float:left;
+  background:url("/res/adm/pages/minitabmenu_left.gif") no-repeat left top;
+  margin:0;
+  padding:0 0 0 9px;
+}
+#LC_minitab_header a {
+  display:block;
+  background:url("/res/adm/pages/minitabmenu_right.gif") no-repeat right top;
+  padding:5px 15px 4px 6px;
+}
+#LC_minitab_header #LC_current_minitab {
+  background-image:url("/res/adm/pages/minitabmenu_left_on.gif");
+}
+#LC_minitab_header #LC_current_minitab a {
+  background-image:url("/res/adm/pages/minitabmenu_right_on.gif");
+  padding-bottom:5px;
+}
+
+
 END
 }
 
@@ -7294,13 +8374,16 @@ sub headtag {
 	'<head>'.
 	&font_settings($args);
 
-    my $inhibitprint = &print_suppression();
+    my $inhibitprint;
+    if ($args->{'print_suppress'}) {
+        $inhibitprint = &print_suppression();
+    }
 
     if (!$args->{'frameset'}) {
 	$result .= &Apache::lonhtmlcommon::htmlareaheaders();
     }
-    if ($args->{'force_register'}) {
-        $result .= &Apache::lonmenu::registerurl(1);
+    if ($args->{'force_register'} && $env{'request.noversionuri'} !~ m{^/res/adm/pages/}) {
+        $result .= Apache::lonxml::display_title();
     }
     if (!$args->{'no_nav_bar'} 
 	&& !$args->{'only_body'}
@@ -7334,6 +8417,82 @@ sub headtag {
 <meta http-equiv="pragma" content="no-cache" />
 <meta http-equiv="Refresh" content="$time; url=$url" />
 ADDMETA
+    } else {
+        unless (($args->{'frameset'}) || ($args->{'js_ready'}) || ($args->{'only_body'}) || ($args->{'no_nav_bar'})) {
+            my $requrl = $env{'request.uri'};
+            if ($requrl eq '') {
+                $requrl = $ENV{'REQUEST_URI'};
+                $requrl =~ s/\?.+$//;
+            }
+            unless (($requrl =~ m{^/adm/(?:switchserver|login|authenticate|logout|groupsort|cleanup|helper|slotrequest|grades)(\?|$)}) ||
+                    (($requrl =~ m{^/res/}) && (($env{'form.submitted'} eq 'scantron') ||
+                     ($env{'form.grade_symb'}) || ($Apache::lonhomework::scantronmode)))) {
+                my $dom_in_use = $Apache::lonnet::perlvar{'lonDefDomain'};
+                unless (&Apache::lonnet::allowed('mau',$dom_in_use)) {
+                    my %domdefs = &Apache::lonnet::get_domain_defaults($dom_in_use);
+                    if (ref($domdefs{'offloadnow'}) eq 'HASH') {
+                        my $lonhost = $Apache::lonnet::perlvar{'lonHostID'};
+                        if ($domdefs{'offloadnow'}{$lonhost}) {
+                            my $newserver = &Apache::lonnet::spareserver(30000,undef,1,$dom_in_use);
+                            if (($newserver) && ($newserver ne $lonhost)) {
+                                my $numsec = 5;
+                                my $timeout = $numsec * 1000;
+                                my ($newurl,$locknum,%locks,$msg);
+                                if ($env{'request.role.adv'}) {
+                                    ($locknum,%locks) = &Apache::lonnet::get_locks();
+                                }
+                                my $disable_submit = 0;
+                                if ($requrl =~ /$LONCAPA::assess_re/) {
+                                    $disable_submit = 1;
+                                }
+                                if ($locknum) {
+                                    my @lockinfo = sort(values(%locks));
+                                    $msg = &mt('Once the following tasks are complete: ')."\\n".
+                                           join(", ",sort(values(%locks)))."\\n".
+                                           &mt('your session will be transferred to a different server, after you click "Roles".');
+                                } else {
+                                    if (($requrl =~ m{^/res/}) && ($env{'form.submitted'} =~ /^part_/)) {
+                                        $msg = &mt('Your LON-CAPA submission has been recorded')."\\n";
+                                    }
+                                    $msg .= &mt('Your current LON-CAPA session will be transferred to a different server in [quant,_1,second].',$numsec);
+                                    $newurl = '/adm/switchserver?otherserver='.$newserver;
+                                    if (($env{'request.role'}) && ($env{'request.role'} ne 'cm')) {
+                                        $newurl .= '&role='.$env{'request.role'};
+                                    }
+                                    if ($env{'request.symb'}) {
+                                        $newurl .= '&symb='.$env{'request.symb'};
+                                    } else {
+                                        $newurl .= '&origurl='.$requrl;
+                                    }
+                                }
+                                &js_escape(\$msg);
+                                $result.=<<OFFLOAD
+<meta http-equiv="pragma" content="no-cache" />
+<script type="text/javascript">
+// <![CDATA[
+function LC_Offload_Now() {
+    var dest = "$newurl";
+    if (dest != '') {
+        window.location.href="$newurl";
+    }
+}
+\$(document).ready(function () {
+    window.alert('$msg');
+    if ($disable_submit) {
+        \$(".LC_hwk_submit").prop("disabled", true);
+        \$( ".LC_textline" ).prop( "readonly", "readonly");
+    }
+    setTimeout('LC_Offload_Now()', $timeout);
+});
+// ]]>
+</script>
+OFFLOAD
+                            }
+                        }
+                    }
+                }
+            }
+        }
     }
     if (!defined($title)) {
 	$title = 'The LearningOnline Network with CAPA';
@@ -7344,14 +8503,21 @@ ADDMETA
     if (!$args->{'frameset'}) {
         $result .= ' /';
     }
-    $result .= '>'
+    $result .= '>' 
         .$inhibitprint
 	.$head_extra;
-    if ($env{'browser.mobile'}) {
+    my $clientmobile;
+    if (($env{'user.name'} eq '') && ($env{'user.domain'} eq '')) {
+        (undef,undef,undef,undef,undef,undef,$clientmobile) = &decode_user_agent();
+    } else {
+        $clientmobile = $env{'browser.mobile'};
+    }
+    if ($clientmobile) {
         $result .= '
 <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=0, minimum-scale=1.0, maximum-scale=1.0">
 <meta name="apple-mobile-web-app-capable" content="yes" />';
     }
+    $result .= '<meta name="google" content="notranslate" />'."\n";
     return $result.'</head>';
 }
 
@@ -7370,12 +8536,12 @@ sub font_settings {
     my $headerstring='';
     if ((!$env{'browser.mathml'} && $env{'browser.unicode'}) ||
         ((ref($args) eq 'HASH') && ($args->{'browser.unicode'}))) {
-	$headerstring.=
-	    '<meta http-equiv="Content-Type" content="text/html; charset=utf-8"';
+        $headerstring.=
+            '<meta http-equiv="Content-Type" content="text/html; charset=utf-8"';
         if (!$args->{'frameset'}) {
-            $headerstring.= ' /';
+	    $headerstring.= ' /';
         }
-        $headerstring .= '>'."\n";
+	$headerstring .= '>'."\n";
     }
     return $headerstring;
 }
@@ -7420,7 +8586,7 @@ sub print_suppression {
         }
         my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
         my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
-        my $blocked = &blocking_status('printout',$cnum,$cdom);
+        my $blocked = &blocking_status('printout',$cnum,$cdom,undef,1);
         if ($blocked) {
             my $checkrole = "cm./$cdom/$cnum";
             if ($env{'request.course.sec'} ne '') {
@@ -7528,16 +8694,17 @@ $args - additional optional args support
              skip_phases    -> hash ref of 
                                     head -> skip the <html><head> generation
                                     body -> skip all <body> generation
-             no_inline_link -> if true and in remote mode, don't show the
-                                    'Switch To Inline Menu' link
              no_auto_mt_title -> prevent &mt()ing the title arg
-             inherit_jsmath -> when creating popup window in a page,
-                                    should it have jsmath forced on by the
-                                    current page
              bread_crumbs ->             Array containing breadcrumbs
              bread_crumbs_component ->  if exists show it as headline else show only the breadcrumbs
-             group          -> includes the current group, if page is for a
+             bread_crumbs_nomenu -> if true will pass false as the value of $menulink
+                                    to lonhtmlcommon::breadcrumbs
+             group          -> includes the current group, if page is for a 
                                specific group
+             use_absolute   -> for request for external resource or syllabus, this
+                               will contain https://<hostname> if server uses
+                               https (as per hosts.tab), but request is for http
+             hostname       -> hostname, originally from $r->hostname(), (optional).
 
 =back
 
@@ -7550,11 +8717,42 @@ sub start_page {
     #&Apache::lonnet::logthis("start_page ".join(':',caller(0)));
 
     $env{'internal.start_page'}++;
-    my ($result,@advtools);
+    my ($result,@advtools,$ltiscope,$ltiuri,%ltimenu);
 
     if (! exists($args->{'skip_phases'}{'head'}) ) {
         $result .= &xml_begin($args->{'frameset'}) . &headtag($title, $head_extra, $args);
     }
+
+    if (($env{'request.course.id'}) && ($env{'request.lti.login'})) {
+        if ($env{'course.'.$env{'request.course.id'}.'.lti.override'}) {
+            unless ($env{'course.'.$env{'request.course.id'}.'.lti.topmenu'}) {
+                $args->{'no_primary_menu'} = 1;
+            }
+            unless ($env{'course.'.$env{'request.course.id'}.'.lti.inlinemenu'}) {
+                $args->{'no_inline_menu'} = 1;
+            }
+            if ($env{'course.'.$env{'request.course.id'}.'.lti.lcmenu'}) {
+                map { $ltimenu{$_} = 1; } split(/,/,$env{'course.'.$env{'request.course.id'}.'.lti.lcmenu'});
+            }
+        } else {
+            my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+            my %lti = &Apache::lonnet::get_domain_lti($cdom,'provider');
+            if (ref($lti{$env{'request.lti.login'}}) eq 'HASH') {
+                unless ($lti{$env{'request.lti.login'}}{'topmenu'}) {
+                    $args->{'no_primary_menu'} = 1;
+                }
+                unless ($lti{$env{'request.lti.login'}}{'inlinemenu'}) {
+                    $args->{'no_inline_menu'} = 1;
+                }
+                if (ref($lti{$env{'request.lti.login'}}{'lcmenu'}) eq 'ARRAY') {
+                    map { $ltimenu{$_} = 1; } @{$lti{$env{'request.lti.login'}}{'lcmenu'}};
+                }
+            }
+        }
+        ($ltiscope,$ltiuri) = &LONCAPA::ltiutils::lti_provider_scope($env{'request.lti.uri'},
+                                  $env{'course.'.$env{'request.course.id'}.'.domain'},
+                                  $env{'course.'.$env{'request.course.id'}.'.num'});
+    }
     
     if (! exists($args->{'skip_phases'}{'body'}) ) {
 	if ($args->{'frameset'}) {
@@ -7567,8 +8765,8 @@ sub start_page {
                          $args->{'function'},       $args->{'add_entries'},
                          $args->{'only_body'},      $args->{'domain'},
                          $args->{'force_register'}, $args->{'no_nav_bar'},
-                         $args->{'bgcolor'},        $args->{'no_inline_link'},
-                         $args,                     \@advtools);
+                         $args->{'bgcolor'},        $args,
+                         \@advtools,$ltiscope,$ltiuri,\%ltimenu);
         }
     }
 
@@ -7601,18 +8799,23 @@ sub start_page {
                 if (@advtools > 0) {
                     &Apache::lonmenu::advtools_crumbs(@advtools);
                 }
-
+                my $menulink;
+                # if arg: bread_crumbs_nomenu is true pass 0 as $menulink item.
+                if ((exists($args->{'bread_crumbs_nomenu'})) ||
+                     ($ltiscope eq 'map') || ($ltiscope eq 'resource') ||
+                     ((($args->{'crstype'} eq 'Placement') || (($env{'request.course.id'}) &&
+                     ($env{'course.'.$env{'request.course.id'}.'.type'} eq 'Placement'))) &&
+                     (!$env{'request.role.adv'}))) {
+                    $menulink = 0;
+                } else {
+                    undef($menulink);
+                }
 		#if bread_crumbs_component exists show it as headline else show only the breadcrumbs
 		if(exists($args->{'bread_crumbs_component'})){
-			$result .= &Apache::lonhtmlcommon::breadcrumbs($args->{'bread_crumbs_component'});
-		}else{
-			$result .= &Apache::lonhtmlcommon::breadcrumbs();
+			$result .= &Apache::lonhtmlcommon::breadcrumbs($args->{'bread_crumbs_component'},'',$menulink);
+                } else {
+			$result .= &Apache::lonhtmlcommon::breadcrumbs('','',$menulink);
 		}
-    } elsif (($env{'environment.remote'} eq 'on') &&
-             ($env{'form.inhibitmenu'} ne 'yes') &&
-             ($env{'request.noversionuri'} =~ m{^/res/}) &&
-             ($env{'request.noversionuri'} !~ m{^/res/adm/pages/})) {
-        $result .= '<div style="padding:0;margin:0;clear:both"><hr /></div>';
     }
     return $result;
 }
@@ -7660,10 +8863,12 @@ function set_wishlistlink(title, path) {
         title = title.replace(/^LON-CAPA /,'');
     }
     title = encodeURIComponent(title);
+    title = title.replace("'","\\\'");
     if (!path) {
         path = location.pathname;
     }
     path = encodeURIComponent(path);
+    path = path.replace("'","\\\'");
     Win = window.open('/adm/wishlist?mode=newLink&setTitle='+title+'&setPath='+path,
                       'wishlistNewLink','width=560,height=350,scrollbars=0');
 }
@@ -7706,12 +8911,13 @@ var modalWindow = {
 };
 	var openMyModal = function(source,width,height,scrolling,transparency,style)
 	{
+                source = source.replace(/'/g,"&#39;");
 		modalWindow.windowId = "myModal";
 		modalWindow.width = width;
 		modalWindow.height = height;
-		modalWindow.content = "<iframe width='"+width+"' height='"+height+"' frameborder='0' scrolling='"+scrolling+"' allowtransparency='"+transparency+"' src='" + source + "' style='"+style+"'>&lt/iframe>";
+		modalWindow.content = "<iframe width='"+width+"' height='"+height+"' frameborder='0' scrolling='"+scrolling+"' allowtransparency='"+transparency+"' src='" + source + "' style='"+style+"'></iframe>";
 		modalWindow.open();
-	};	
+	};
 // END LON-CAPA Internal -->
 // ]]>
 </script>
@@ -7757,7 +8963,7 @@ sub modal_adhoc_inner {
     my ($funcname,$width,$height,$content)=@_;
     my $innerwidth=$width-20;
     $content=&js_ready(
-               &start_page('Dialog',undef,{'only_body'=>1,'bgcolor'=>'#FFFFFF'}).
+                 &start_page('Dialog',undef,{'only_body'=>1,'bgcolor'=>'#FFFFFF'}).
                  &start_scrollbox($width.'px',$innerwidth.'px',$height.'px','myModal','#FFFFFF',undef,1).
                  $content.
                  &end_scrollbox().
@@ -7834,8 +9040,9 @@ sub end_togglebox {
 }
 
 sub LCprogressbar_script {
-   my ($id)=@_;
-   return(<<ENDPROGRESS);
+   my ($id,$number_to_do)=@_;
+   if ($number_to_do) {
+       return(<<ENDPROGRESS);
 <script type="text/javascript">
 // <![CDATA[
 \$('#progressbar$id').progressbar({
@@ -7848,21 +9055,43 @@ sub LCprogressbar_script {
 // ]]>
 </script>
 ENDPROGRESS
+   } else {
+       return(<<ENDPROGRESS);
+<script type="text/javascript">
+// <![CDATA[
+\$('#progressbar$id').progressbar({
+  value: false,
+  create: function(event, ui) {
+    \$('.ui-widget-header', this).css({'background':'#F0F0F0'});
+    \$('.ui-progressbar-overlay', this).css({'margin':'0'});
+  }
+});
+// ]]>
+</script>
+ENDPROGRESS
+   }
 }
 
 sub LCprogressbarUpdate_script {
    return(<<ENDPROGRESSUPDATE);
 <style type="text/css">
 .ui-progressbar { position:relative; }
+.progress-label {position: absolute; width: 100%; text-align: center; top: 1px; font-weight: bold; text-shadow: 1px 1px 0 #fff;margin: 0; line-height: 200%; }
 .pblabel { position: absolute; width: 100%; text-align: center; line-height: 1.9em; }
 </style>
 <script type="text/javascript">
 // <![CDATA[
 var LCprogressTxt='---';
 
-function LCupdateProgress(percent,progresstext,id) {
+function LCupdateProgress(percent,progresstext,id,maxnum) {
    LCprogressTxt=progresstext;
-   \$('#progressbar'+id).progressbar('value',percent);
+   if ((maxnum == '') || (maxnum == undefined) || (maxnum == null)) {
+       \$('#progressbar'+id).find('.progress-label').text(LCprogressTxt);
+   } else if (percent === \$('#progressbar'+id).progressbar( "value" )) {
+       \$('#progressbar'+id).find('.pblabel').text(LCprogressTxt);
+   } else {
+       \$('#progressbar'+id).progressbar('value',percent);
+   }
 }
 // ]]>
 </script>
@@ -7874,37 +9103,54 @@ my $LCidcnt;
 my $LCcurrentid;
 
 sub LCprogressbar {
-    my ($r)=(@_);
+    my ($r,$number_to_do,$preamble)=@_;
     $LClastpercent=0;
     $LCidcnt++;
     $LCcurrentid=$$.'_'.$LCidcnt;
-    my $starting=&mt('Starting');
-    my $content=(<<ENDPROGBAR);
+    my ($starting,$content);
+    if ($number_to_do) {
+        $starting=&mt('Starting');
+        $content=(<<ENDPROGBAR);
+$preamble
   <div id="progressbar$LCcurrentid">
     <span class="pblabel">$starting</span>
   </div>
 ENDPROGBAR
-    &r_print($r,$content.&LCprogressbar_script($LCcurrentid));
+    } else {
+        $starting=&mt('Loading...');
+        $LClastpercent='false';
+        $content=(<<ENDPROGBAR);
+$preamble
+  <div id="progressbar$LCcurrentid">
+      <div class="progress-label">$starting</div>
+  </div>
+ENDPROGBAR
+    }
+    &r_print($r,$content.&LCprogressbar_script($LCcurrentid,$number_to_do));
 }
 
 sub LCprogressbarUpdate {
-    my ($r,$val,$text)=@_;
-    unless ($val) { 
-       if ($LClastpercent) {
-           $val=$LClastpercent;
-       } else {
-           $val=0;
-       }
+    my ($r,$val,$text,$number_to_do)=@_;
+    if ($number_to_do) {
+        unless ($val) { 
+            if ($LClastpercent) {
+                $val=$LClastpercent;
+            } else {
+                $val=0;
+            }
+        }
+        if ($val<0) { $val=0; }
+        if ($val>100) { $val=0; }
+        $LClastpercent=$val;
+        unless ($text) { $text=$val.'%'; }
+    } else {
+        $val = 'false';
     }
-    if ($val<0) { $val=0; }
-    if ($val>100) { $val=0; }
-    $LClastpercent=$val;
-    unless ($text) { $text=$val.'%'; }
     $text=&js_ready($text);
     &r_print($r,<<ENDUPDATE);
 <script type="text/javascript">
 // <![CDATA[
-LCupdateProgress($val,'$text','$LCcurrentid');
+LCupdateProgress($val,'$text','$LCcurrentid','$number_to_do');
 // ]]>
 </script>
 ENDUPDATE
@@ -8089,14 +9335,21 @@ function expand_div(caller) {
 
 sub simple_error_page {
     my ($r,$title,$msg,$args) = @_;
+    my %displayargs;
     if (ref($args) eq 'HASH') {
         if (!$args->{'no_auto_mt_msg'}) { $msg = &mt($msg); }
+        if ($args->{'only_body'}) {
+            $displayargs{'only_body'} = 1;
+        }
+        if ($args->{'no_nav_bar'}) {
+            $displayargs{'no_nav_bar'} = 1;
+        }
     } else {
         $msg = &mt($msg);
     }
 
     my $page =
-	&Apache::loncommon::start_page($title).
+	&Apache::loncommon::start_page($title,'',\%displayargs).
 	'<p class="LC_error">'.$msg.'</p>'.
 	&Apache::loncommon::end_page();
     if (ref($r)) {
@@ -8313,7 +9566,7 @@ role status: active, previous or future.
 sub check_user_status {
     my ($udom,$uname,$cdom,$crs,$role,$sec) = @_;
     my %userinfo = &Apache::lonnet::dump('roles',$udom,$uname);
-    my @uroles = keys %userinfo;
+    my @uroles = keys(%userinfo);
     my $srchstr;
     my $active_chk = 'none';
     my $now = time;
@@ -8402,7 +9655,7 @@ sub get_sections {
         }
     }
 
-    if ($check_students) {
+    if ($check_students) { 
 	my ($classlist) = &Apache::loncoursedata::get_classlist($cdom,$cnum);
 	my $sec_index = &Apache::loncoursedata::CL_SECTION();
 	my $status_index = &Apache::loncoursedata::CL_STATUS();
@@ -8724,8 +9977,8 @@ Incoming parameters:
 2. user's domain
 3. quota name - portfolio, author, or course
    (if no quota name provided, defaults to portfolio).
-4. crstype - official, unofficial, textbook or community, if quota name is
-   course
+4. crstype - official, unofficial, textbook, placement or community, 
+   if quota name is course
 
 Returns:
 1. Disk quota (in MB) assigned to student.
@@ -8798,8 +10051,9 @@ sub get_user_quota {
         if ($quota eq '' || wantarray) {
             if ($quotaname eq 'course') {
                 my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
-                if (($crstype eq 'official') || ($crstype eq 'unofficial') ||
-                    ($crstype eq 'community') || ($crstype eq 'textbook')) {
+                if (($crstype eq 'official') || ($crstype eq 'unofficial') || 
+                    ($crstype eq 'community') || ($crstype eq 'textbook') ||
+                    ($crstype eq 'placement')) { 
                     $defquota = $domdefs{$crstype.'quota'};
                 }
                 if ($defquota eq '') {
@@ -8947,7 +10201,7 @@ Inputs: 7
 4. filename of file for which action is being requested
 5. filesize (kB) of file
 6. action being taken: copy or upload.
-7. quotatype (in course context -- official, unofficial, community or textbook).
+7. quotatype (in course context -- official, unofficial, textbook, placement or community).
 
 Returns: 1 scalar: HTML to display containing warning if quota would be exceeded,
          otherwise return null.
@@ -8983,6 +10237,8 @@ sub excess_filesize_warning {
 ###############################################
 
 
+
+
 sub get_secgrprole_info {
     my ($cdom,$cnum,$needroles,$type)  = @_;
     my %sections_count = &get_sections($cdom,$cnum);
@@ -9021,8 +10277,24 @@ sub get_secgrprole_info {
 }
 
 sub user_picker {
-    my ($dom,$srch,$forcenewuser,$caller,$cancreate,$usertype,$context) = @_;
+    my ($dom,$srch,$forcenewuser,$caller,$cancreate,$usertype,$context,$fixeddom,$noinstd) = @_;
     my $currdom = $dom;
+    my @alldoms = &Apache::lonnet::all_domains();
+    if (@alldoms == 1) {
+        my %domsrch = &Apache::lonnet::get_dom('configuration',
+                                               ['directorysrch'],$alldoms[0]);
+        my $domdesc = &Apache::lonnet::domain($alldoms[0],'description');
+        my $showdom = $domdesc;
+        if ($showdom eq '') {
+            $showdom = $dom;
+        }
+        if (ref($domsrch{'directorysrch'}) eq 'HASH') {
+            if ((!$domsrch{'directorysrch'}{'available'}) &&
+                ($domsrch{'directorysrch'}{'lcavailable'} eq '0')) {
+                return (&mt('LON-CAPA directory search is not available in domain: [_1]',$showdom),0);
+            }
+        }
+    }
     my %curr_selected = (
                         srchin => 'dom',
                         srchby => 'lastname',
@@ -9043,7 +10315,7 @@ sub user_picker {
         }
         $srchterm = $srch->{'srchterm'};
     }
-    my %lt=&Apache::lonlocal::texthash(
+    my %html_lt=&Apache::lonlocal::texthash(
                     'usr'       => 'Search criteria',
                     'doma'      => 'Domain/institution to search',
                     'uname'     => 'username',
@@ -9056,6 +10328,8 @@ sub user_picker {
                     'exact'     => 'is',
                     'contains'  => 'contains',
                     'begins'    => 'begins with',
+                                       );
+    my %js_lt=&Apache::lonlocal::texthash(
                     'youm'      => "You must include some text to search for.",
                     'thte'      => "The text you are searching for must contain at least two characters when using a 'begins' type search.",
                     'thet'      => "The text you are searching for must contain at least three characters when using a 'contains' type search.",
@@ -9065,7 +10339,25 @@ sub user_picker {
                     'whse'      => "When searching by last,first you must include at least one character in the first name.",
                      'thfo'     => "The following need to be corrected before the search can be run:",
                                        );
-    my $domform = &select_dom_form($currdom,'srchdomain',1,1);
+    &html_escape(\%html_lt);
+    &js_escape(\%js_lt);
+    my $domform;
+    my $allow_blank = 1;
+    if ($fixeddom) {
+        $allow_blank = 0;
+        $domform = &select_dom_form($currdom,'srchdomain',$allow_blank,1,undef,[$currdom]);
+    } else {
+        my $defdom = $env{'request.role.domain'};
+        my ($trusted,$untrusted);
+        if (($context eq 'requestcrs') || ($context eq 'course')) {
+            ($trusted,$untrusted) = &Apache::lonnet::trusted_domains('enroll',$defdom);
+        } elsif ($context eq 'author') {
+            ($trusted,$untrusted) = &Apache::lonnet::trusted_domains('othcoau',$defdom);
+        } elsif ($context eq 'domain') {
+            ($trusted,$untrusted) = &Apache::lonnet::trusted_domains('domroles',$defdom);
+        }
+        $domform = &select_dom_form($currdom,'srchdomain',$allow_blank,1,undef,$trusted,$untrusted);
+    }
     my $srchinsel = ' <select name="srchin">';
 
     my @srchins = ('crs','dom','alc','instd');
@@ -9077,12 +10369,13 @@ sub user_picker {
         next if ($option eq 'alc');
         next if (($option eq 'crs') && ($env{'form.form'} eq 'requestcrs'));  
         next if ($option eq 'crs' && !$env{'request.course.id'});
+        next if (($option eq 'instd') && ($noinstd));
         if ($curr_selected{'srchin'} eq $option) {
             $srchinsel .= ' 
-   <option value="'.$option.'" selected="selected">'.$lt{$option}.'</option>';
+   <option value="'.$option.'" selected="selected">'.$html_lt{$option}.'</option>';
         } else {
             $srchinsel .= '
-   <option value="'.$option.'">'.$lt{$option}.'</option>';
+   <option value="'.$option.'">'.$html_lt{$option}.'</option>';
         }
     }
     $srchinsel .= "\n  </select>\n";
@@ -9091,10 +10384,10 @@ sub user_picker {
     foreach my $option ('lastname','lastfirst','uname') {
         if ($curr_selected{'srchby'} eq $option) {
             $srchbysel .= '
-   <option value="'.$option.'" selected="selected">'.$lt{$option}.'</option>';
+   <option value="'.$option.'" selected="selected">'.$html_lt{$option}.'</option>';
         } else {
             $srchbysel .= '
-   <option value="'.$option.'">'.$lt{$option}.'</option>';
+   <option value="'.$option.'">'.$html_lt{$option}.'</option>';
          }
     }
     $srchbysel .= "\n  </select>\n";
@@ -9103,10 +10396,10 @@ sub user_picker {
     foreach my $option ('begins','contains','exact') {
         if ($curr_selected{'srchtype'} eq $option) {
             $srchtypesel .= '
-   <option value="'.$option.'" selected="selected">'.$lt{$option}.'</option>';
+   <option value="'.$option.'" selected="selected">'.$html_lt{$option}.'</option>';
         } else {
             $srchtypesel .= '
-   <option value="'.$option.'">'.$lt{$option}.'</option>';
+   <option value="'.$option.'">'.$html_lt{$option}.'</option>';
         }
     }
     $srchtypesel .= "\n  </select>\n";
@@ -9191,46 +10484,46 @@ function validateEntry(callingForm) {
 
     if (srchterm == "") {
         checkok = 0;
-        msg += "$lt{'youm'}\\n";
+        msg += "$js_lt{'youm'}\\n";
     }
 
     if (srchtype== 'begins') {
         if (srchterm.length < 2) {
             checkok = 0;
-            msg += "$lt{'thte'}\\n";
+            msg += "$js_lt{'thte'}\\n";
         }
     }
 
     if (srchtype== 'contains') {
         if (srchterm.length < 3) {
             checkok = 0;
-            msg += "$lt{'thet'}\\n";
+            msg += "$js_lt{'thet'}\\n";
         }
     }
     if (srchin == 'instd') {
         if (srchdomain == '') {
             checkok = 0;
-            msg += "$lt{'yomc'}\\n";
+            msg += "$js_lt{'yomc'}\\n";
         }
     }
     if (srchin == 'dom') {
         if (srchdomain == '') {
             checkok = 0;
-            msg += "$lt{'ymcd'}\\n";
+            msg += "$js_lt{'ymcd'}\\n";
         }
     }
     if (srchby == 'lastfirst') {
         if (srchterm.indexOf(",") == -1) {
             checkok = 0;
-            msg += "$lt{'whus'}\\n";
+            msg += "$js_lt{'whus'}\\n";
         }
         if (srchterm.indexOf(",") == srchterm.length -1) {
             checkok = 0;
-            msg += "$lt{'whse'}\\n";
+            msg += "$js_lt{'whse'}\\n";
         }
     }
     if (checkok == 0) {
-        alert("$lt{'thfo'}\\n"+msg);
+        alert("$js_lt{'thfo'}\\n"+msg);
         return;
     }
     if (checkok == 1) {
@@ -9248,10 +10541,10 @@ $new_user_create
 END_BLOCK
 
     $output .= &Apache::lonhtmlcommon::start_pick_box().
-               &Apache::lonhtmlcommon::row_title($lt{'doma'}).
+               &Apache::lonhtmlcommon::row_title($html_lt{'doma'}).
                $domform.
                &Apache::lonhtmlcommon::row_closure().
-               &Apache::lonhtmlcommon::row_title($lt{'usr'}).
+               &Apache::lonhtmlcommon::row_title($html_lt{'usr'}).
                $srchbysel.
                $srchtypesel. 
                '<input type="text" size="15" name="srchterm" value="'.$srchterm.'" />'.
@@ -9259,61 +10552,165 @@ END_BLOCK
                &Apache::lonhtmlcommon::row_closure(1). 
                &Apache::lonhtmlcommon::end_pick_box().
                '<br />';
-    return $output;
+    return ($output,1);
 }
 
 sub user_rule_check {
     my ($usershash,$checks,$alerts,$rulematch,$inst_results,$curr_rules,$got_rules) = @_;
-    my $response;
+    my ($response,%inst_response);
     if (ref($usershash) eq 'HASH') {
-        foreach my $user (keys(%{$usershash})) {
-            my ($uname,$udom) = split(/:/,$user);
-            next if ($udom eq '' || $uname eq '');
-            my ($id,$newuser);
-            if (ref($usershash->{$user}) eq 'HASH') {
-                $newuser = $usershash->{$user}->{'newuser'};
-                $id = $usershash->{$user}->{'id'};
-            }
-            my $inst_response;
+        if (keys(%{$usershash}) > 1) {
+            my (%by_username,%by_id,%userdoms);
+            my $checkid; 
             if (ref($checks) eq 'HASH') {
-                if (defined($checks->{'username'})) {
-                    ($inst_response,%{$inst_results->{$user}}) = 
-                        &Apache::lonnet::get_instuser($udom,$uname);
-                } elsif (defined($checks->{'id'})) {
-                    ($inst_response,%{$inst_results->{$user}}) =
-                        &Apache::lonnet::get_instuser($udom,undef,$id);
+                if ((!defined($checks->{'username'})) && (defined($checks->{'id'}))) {
+                    $checkid = 1;
+                }
+            }
+            foreach my $user (keys(%{$usershash})) {
+                my ($uname,$udom) = split(/:/,$user);
+                if ($checkid) {
+                    if (ref($usershash->{$user}) eq 'HASH') {
+                        if ($usershash->{$user}->{'id'} ne '') {
+                            $by_id{$udom}{$usershash->{$user}->{'id'}} = $uname; 
+                            $userdoms{$udom} = 1;
+                            if (ref($inst_results) eq 'HASH') {
+                                $inst_results->{$uname.':'.$udom} = {};
+                            }
+                        }
+                    }
+                } else {
+                    $by_username{$udom}{$uname} = 1;
+                    $userdoms{$udom} = 1;
+                    if (ref($inst_results) eq 'HASH') {
+                        $inst_results->{$uname.':'.$udom} = {};
+                    }
+                }
+            }
+            foreach my $udom (keys(%userdoms)) {
+                if (!$got_rules->{$udom}) {
+                    my %domconfig = &Apache::lonnet::get_dom('configuration',
+                                                             ['usercreation'],$udom);
+                    if (ref($domconfig{'usercreation'}) eq 'HASH') {
+                        foreach my $item ('username','id') {
+                            if (ref($domconfig{'usercreation'}{$item.'_rule'}) eq 'ARRAY') {
+                                $$curr_rules{$udom}{$item} =
+                                    $domconfig{'usercreation'}{$item.'_rule'};
+                            }
+                        }
+                    }
+                    $got_rules->{$udom} = 1;
+                }
+            }
+            if ($checkid) {
+                foreach my $udom (keys(%by_id)) {
+                    my ($outcome,$results) = &Apache::lonnet::get_multiple_instusers($udom,$by_id{$udom},'id');
+                    if ($outcome eq 'ok') {
+                        foreach my $id (keys(%{$by_id{$udom}})) {
+                            my $uname = $by_id{$udom}{$id};
+                            $inst_response{$uname.':'.$udom} = $outcome;
+                        }
+                        if (ref($results) eq 'HASH') {
+                            foreach my $uname (keys(%{$results})) {
+                                if (exists($inst_response{$uname.':'.$udom})) {
+                                    $inst_response{$uname.':'.$udom} = $outcome;
+                                    $inst_results->{$uname.':'.$udom} = $results->{$uname};
+                                }
+                            }
+                        }
+                    }
                 }
             } else {
-                ($inst_response,%{$inst_results->{$user}}) =
-                    &Apache::lonnet::get_instuser($udom,$uname);
-                return;
+                foreach my $udom (keys(%by_username)) {
+                    my ($outcome,$results) = &Apache::lonnet::get_multiple_instusers($udom,$by_username{$udom});
+                    if ($outcome eq 'ok') {
+                        foreach my $uname (keys(%{$by_username{$udom}})) {
+                            $inst_response{$uname.':'.$udom} = $outcome;
+                        }
+                        if (ref($results) eq 'HASH') {
+                            foreach my $uname (keys(%{$results})) {
+                                $inst_results->{$uname.':'.$udom} = $results->{$uname};
+                            }
+                        }
+                    }
+                }
             }
-            if (!$got_rules->{$udom}) {
-                my %domconfig = &Apache::lonnet::get_dom('configuration',
-                                                  ['usercreation'],$udom);
-                if (ref($domconfig{'usercreation'}) eq 'HASH') {
-                    foreach my $item ('username','id') {
-                        if (ref($domconfig{'usercreation'}{$item.'_rule'}) eq 'ARRAY') {
-                            $$curr_rules{$udom}{$item} = 
-                                $domconfig{'usercreation'}{$item.'_rule'};
+        } elsif (keys(%{$usershash}) == 1) {
+            my $user = (keys(%{$usershash}))[0];
+            my ($uname,$udom) = split(/:/,$user);
+            if (($udom ne '') && ($uname ne '')) {
+                if (ref($usershash->{$user}) eq 'HASH') {
+                    if (ref($checks) eq 'HASH') {
+                        if (defined($checks->{'username'})) {
+                            ($inst_response{$user},%{$inst_results->{$user}}) = 
+                                &Apache::lonnet::get_instuser($udom,$uname);
+                        } elsif (defined($checks->{'id'})) {
+                            if ($usershash->{$user}->{'id'} ne '') {
+                                ($inst_response{$user},%{$inst_results->{$user}}) =
+                                    &Apache::lonnet::get_instuser($udom,undef,
+                                                                  $usershash->{$user}->{'id'});
+                            } else {
+                                ($inst_response{$user},%{$inst_results->{$user}}) =
+                                    &Apache::lonnet::get_instuser($udom,$uname);
+                            }
+                        }
+                    } else {
+                       ($inst_response{$user},%{$inst_results->{$user}}) =
+                            &Apache::lonnet::get_instuser($udom,$uname);
+                       return;
+                    }
+                    if (!$got_rules->{$udom}) {
+                        my %domconfig = &Apache::lonnet::get_dom('configuration',
+                                                                 ['usercreation'],$udom);
+                        if (ref($domconfig{'usercreation'}) eq 'HASH') {
+                            foreach my $item ('username','id') {
+                                if (ref($domconfig{'usercreation'}{$item.'_rule'}) eq 'ARRAY') {
+                                   $$curr_rules{$udom}{$item} = 
+                                       $domconfig{'usercreation'}{$item.'_rule'};
+                                }
+                            }
                         }
+                        $got_rules->{$udom} = 1;
                     }
                 }
-                $got_rules->{$udom} = 1;  
+            } else {
+                return;
+            }
+        } else {
+            return;
+        }
+        foreach my $user (keys(%{$usershash})) {
+            my ($uname,$udom) = split(/:/,$user);
+            next if (($udom eq '') || ($uname eq ''));
+            my $id;
+            if (ref($inst_results) eq 'HASH') {
+                if (ref($inst_results->{$user}) eq 'HASH') {
+                    $id = $inst_results->{$user}->{'id'};
+                }
+            }
+            if ($id eq '') { 
+                if (ref($usershash->{$user})) {
+                    $id = $usershash->{$user}->{'id'};
+                }
             }
             foreach my $item (keys(%{$checks})) {
                 if (ref($$curr_rules{$udom}) eq 'HASH') {
                     if (ref($$curr_rules{$udom}{$item}) eq 'ARRAY') {
                         if (@{$$curr_rules{$udom}{$item}} > 0) {
-                            my %rule_check = &Apache::lonnet::inst_rulecheck($udom,$uname,$id,$item,$$curr_rules{$udom}{$item});
+                            my %rule_check = &Apache::lonnet::inst_rulecheck($udom,$uname,$id,$item,
+                                                                             $$curr_rules{$udom}{$item});
                             foreach my $rule (@{$$curr_rules{$udom}{$item}}) {
                                 if ($rule_check{$rule}) {
                                     $$rulematch{$user}{$item} = $rule;
-                                    if ($inst_response eq 'ok') {
+                                    if ($inst_response{$user} eq 'ok') {
                                         if (ref($inst_results) eq 'HASH') {
                                             if (ref($inst_results->{$user}) eq 'HASH') {
                                                 if (keys(%{$inst_results->{$user}}) == 0) {
                                                     $$alerts{$item}{$udom}{$uname} = 1;
+                                                } elsif ($item eq 'id') {
+                                                    if ($inst_results->{$user}->{'id'} eq '') {
+                                                        $$alerts{$item}{$udom}{$uname} = 1;
+                                                    }
                                                 }
                                             }
                                         }
@@ -9424,7 +10821,14 @@ sub personal_data_fieldtitles {
 
 sub sorted_inst_types {
     my ($dom) = @_;
-    my ($usertypes,$order) = &Apache::lonnet::retrieve_inst_usertypes($dom);
+    my ($usertypes,$order);
+    my %domdefaults = &Apache::lonnet::get_domain_defaults($dom);
+    if (ref($domdefaults{'inststatus'}) eq 'HASH') {
+        $usertypes = $domdefaults{'inststatus'}{'inststatustypes'};
+        $order = $domdefaults{'inststatus'}{'inststatusorder'};
+    } else {
+        ($usertypes,$order) = &Apache::lonnet::retrieve_inst_usertypes($dom);
+    }
     my $othertitle = &mt('All users');
     if ($env{'request.course.id'}) {
         $othertitle  = &mt('Any users');
@@ -9463,7 +10867,7 @@ sub get_institutional_codes {
         foreach (@currxlists) {
             if (m/^([^:]+):(\w*)$/) {
                 unless (grep/^$1$/,@{$allcourses}) {
-                    push @{$allcourses},$1;
+                    push(@{$allcourses},$1);
                     $$LC_code{$1} = $2;
                 }
             }
@@ -9476,7 +10880,7 @@ sub get_institutional_codes {
                 my $sec = $coursecode.$1;
                 my $lc_sec = $2;
                 unless (grep/^$sec$/,@{$allcourses}) {
-                    push @{$allcourses},$sec;
+                    push(@{$allcourses},$sec);
                     $$LC_code{$sec} = $lc_sec;
                 }
             }
@@ -9574,7 +10978,9 @@ reservable_now - ref to hash of student_
 
     Keys in inner hash are:
     (a) symb: either blank or symb to which slot use is restricted.
-    (b) endreserve: end date of reservation period. 
+    (b) endreserve: end date of reservation period.
+    (c) uniqueperiod: start,end dates when slot is to be uniquely
+        selected.
 
 sorted_future - ref to array of student_schedulable slots reservable in
                 the future, ordered by start date of reservation period.
@@ -9584,7 +10990,9 @@ future_reservable - ref to hash of stude
 
     Keys in inner hash are:
     (a) symb: either blank or symb to which slot use is restricted.
-    (b) startreserve:  start date of reservation period.
+    (b) startreserve: start date of reservation period.
+    (c) uniqueperiod: start,end dates when slot is to be uniquely
+        selected.
 
 =back
 
@@ -9592,13 +11000,35 @@ future_reservable - ref to hash of stude
 
 sub get_future_slots {
     my ($cnum,$cdom,$now,$symb) = @_;
+    my $map;
+    if ($symb) {
+        ($map) = &Apache::lonnet::decode_symb($symb);
+    }
     my (%reservable_now,%future_reservable,@sorted_reservable,@sorted_future);
     my %slots = &Apache::lonnet::get_course_slots($cnum,$cdom);
     foreach my $slot (keys(%slots)) {
         next unless($slots{$slot}->{'type'} eq 'schedulable_student');
         if ($symb) {
-            next if (($slots{$slot}->{'symb'} ne '') && 
-                     ($slots{$slot}->{'symb'} ne $symb));
+            if ($slots{$slot}->{'symb'} ne '') {
+                my $canuse;
+                my %oksymbs;
+                my @slotsymbs = split(/\s*,\s*/,$slots{$slot}->{'symb'});
+                map { $oksymbs{$_} = 1; } @slotsymbs;
+                if ($oksymbs{$symb}) {
+                    $canuse = 1;
+                } else {
+                    foreach my $item (@slotsymbs) {
+                        if ($item =~ /\.(page|sequence)$/) {
+                            (undef,undef,my $sloturl) = &Apache::lonnet::decode_symb($item);
+                            if (($map ne '') && ($map eq $sloturl)) {
+                                $canuse = 1;
+                                last;
+                            }
+                        }
+                    }
+                }
+                next unless ($canuse);
+            }
         }
         if (($slots{$slot}->{'starttime'} > $now) &&
             ($slots{$slot}->{'endtime'} > $now)) {
@@ -9638,6 +11068,10 @@ sub get_future_slots {
             my $startreserve = $slots{$slot}->{'startreserve'};
             my $endreserve = $slots{$slot}->{'endreserve'};
             my $symb = $slots{$slot}->{'symb'};
+            my $uniqueperiod;
+            if (ref($slots{$slot}->{'uniqueperiod'}) eq 'ARRAY') {
+                $uniqueperiod = join(',',@{$slots{$slot}->{'uniqueperiod'}});
+            }
             if (($startreserve < $now) &&
                 (!$endreserve || $endreserve > $now)) {
                 my $lastres = $endreserve;
@@ -9646,13 +11080,15 @@ sub get_future_slots {
                 }
                 $reservable_now{$slot} = {
                                            symb       => $symb,
-                                           endreserve => $lastres
+                                           endreserve => $lastres,
+                                           uniqueperiod => $uniqueperiod,
                                          };
             } elsif (($startreserve > $now) &&
                      (!$endreserve || $endreserve > $startreserve)) {
                 $future_reservable{$slot} = {
                                               symb         => $symb,
-                                              startreserve => $startreserve
+                                              startreserve => $startreserve,
+                                              uniqueperiod => $uniqueperiod,
                                             };
             }
         }
@@ -9810,7 +11246,23 @@ sub get_env_multiple {
     return(@values);
 }
 
+# Looks at given dependencies, and returns something depending on the context.
+# For coursedocs paste, returns (undef, $counter, $numpathchg, \%existing).
+# For syllabus rewrites, returns (undef, $counter, $numpathchg, \%existing, \%mapping).
+# For all other contexts, returns ($output, $counter, $numpathchg).
+# $output: string with the HTML output. Can contain missing dependencies with an upload form, existing dependencies, and dependencies no longer in use.
+# $counter: integer with the number of existing dependencies when no HTML output is returned, and the number of missing dependencies when an HTML output is returned.
+# $numpathchg: integer with the number of cleaned up dependency paths.
+# \%existing: hash reference clean path -> 1 only for existing dependencies.
+# \%mapping: hash reference clean path -> original path for all dependencies.
+# @param {string} actionurl - The path to the handler, indicative of the context.
+# @param {string} state - Can contain HTML with hidden inputs that will be added to the output form.
+# @param {hash reference} allfiles - List of file info from lonnet::extract_embedded_items
+# @param {hash reference} codebase - undef, not modified by lonnet::extract_embedded_items ?
+# @param {hash reference} args - More parameters ! Possible keys: error_on_invalid_names (boolean), ignore_remote_references (boolean), current_path (string), docs_url (string), docs_title (string), context (string)
+# @return {Array} - array depending on the context (not a reference)
 sub ask_for_embedded_content {
+    # NOTE: documentation was added afterwards, it could be wrong
     my ($actionurl,$state,$allfiles,$codebase,$args)=@_;
     my (%subdependencies,%dependencies,%mapping,%existing,%newfiles,%pathchanges,
         %currsubfile,%unused,$rem);
@@ -9826,6 +11278,9 @@ sub ask_for_embedded_content {
     my $heading = &mt('Upload embedded files');
     my $buttontext = &mt('Upload');
 
+    # fills these variables based on the context:
+    # $navmap, $cdom, $cnum, $udom, $uname, $url, $toplevel, $getpropath,
+    # $path, $fileloc, $title, $rem, $filename
     if ($env{'request.course.id'}) {
         if ($actionurl eq '/adm/dependencies') {
             $navmap = Apache::lonnavmaps::navmap->new();
@@ -9833,7 +11288,7 @@ sub ask_for_embedded_content {
         $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
         $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
     }
-    if (($actionurl eq '/adm/portfolio') ||
+    if (($actionurl eq '/adm/portfolio') || 
         ($actionurl eq '/adm/coursegrp_portfolio')) {
         my $current_path='/';
         if ($env{'form.currentpath'}) {
@@ -9865,18 +11320,18 @@ sub ask_for_embedded_content {
             $toplevel = $url;
             if ($args->{'context'} eq 'paste') {
                 ($cdom,$cnum) = ($url =~ m{^\Q/uploaded/\E($match_domain)/($match_courseid)/});
-                ($path) =
+                ($path) = 
                     ($toplevel =~ m{^(\Q/uploaded/$cdom/$cnum/\E(?:docs|supplemental)/(?:default|\d+)/\d+)/});
                 $fileloc = &Apache::lonnet::filelocation('',$toplevel);
                 $fileloc =~ s{^/}{};
             }
         }
-    } elsif ($actionurl eq '/adm/dependencies') {
+    } elsif ($actionurl eq '/adm/dependencies')  {
         if ($env{'request.course.id'} ne '') {
             if (ref($args) eq 'HASH') {
                 $url = $args->{'docs_url'};
                 $title = $args->{'docs_title'};
-                $toplevel = $url;
+                $toplevel = $url; 
                 unless ($toplevel =~ m{^/}) {
                     $toplevel = "/$url";
                 }
@@ -9887,7 +11342,15 @@ sub ask_for_embedded_content {
                     ($path) =
                         ($toplevel =~ m{^(\Q/uploaded/$cdom/$cnum/\E(?:docs|supplemental)/(?:default|\d+)/\d+)/});
                 }
-                $fileloc = &Apache::lonnet::filelocation('',$toplevel);
+                if ($toplevel=~/^\/*(uploaded|editupload)/) {
+                    $fileloc = $toplevel;
+                    $fileloc=~ s/^\s*(\S+)\s*$/$1/;
+                    my ($udom,$uname,$fname) =
+                        ($fileloc=~ m{^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$});
+                    $fileloc = propath($udom,$uname).'/userfiles/'.$fname;
+                } else {
+                    $fileloc = &Apache::lonnet::filelocation('',$toplevel);
+                }
                 $fileloc =~ s{^/}{};
                 ($filename) = ($fileloc =~ m{.+/([^/]+)$});
                 $heading = &mt('Status of dependencies in [_1]',"$title ($filename)");
@@ -9902,6 +11365,16 @@ sub ask_for_embedded_content {
         $fileloc = &Apache::lonnet::filelocation('',$toplevel).'/';
         $fileloc =~ s{^/}{};
     }
+    
+    # parses the dependency paths to get some info
+    # fills $newfiles, $mapping, $subdependencies, $dependencies
+    # $newfiles: hash URL -> 1 for new files or external URLs
+    # (will be completed later)
+    # $mapping:
+    #   for external URLs: external URL -> external URL
+    #   for relative paths: clean path -> original path
+    # $subdependencies: hash clean path -> clean file name -> 1 for relative paths in subdirectories
+    # $dependencies: hash clean or not file name -> 1 for relative paths not in subdirectories
     foreach my $file (keys(%{$allfiles})) {
         my $embed_file;
         if (($path eq "/uploaded/$cdom/$cnum/portfolio/syllabus") && ($file =~ m{^\Q$path/\E(.+)$})) {
@@ -9944,11 +11417,24 @@ sub ask_for_embedded_content {
             }
         }
     }
+    
+    # looks for all existing files in dependency subdirectories (from $subdependencies filled above)
+    # and lists
+    # fills $currsubfile, $pathchanges, $existing, $numexisting, $newfiles, $unused
+    # $currsubfile: hash clean path -> file name -> 1 for all existing files in the path
+    # $pathchanges: hash clean path -> 1 if the file in subdirectory exists and
+    #                                    the path had to be cleaned up
+    # $existing: hash clean path -> 1 if the file exists
+    # $numexisting: number of keys in $existing
+    # $newfiles: updated with clean path -> 1 for files in subdirectories that do not exist
+    # $unused: only for /adm/dependencies, hash clean path -> 1 for existing files in
+    #                                      dependency subdirectories that are
+    #                                      not listed as dependencies, with some exceptions using $rem
     my $dirptr = 16384;
     foreach my $path (keys(%subdependencies)) {
         $currsubfile{$path} = {};
-        if (($actionurl eq '/adm/portfolio') ||
-            ($actionurl eq '/adm/coursegrp_portfolio')) { 
+        if (($actionurl eq '/adm/portfolio') || 
+            ($actionurl eq '/adm/coursegrp_portfolio')) {
             my ($sublistref,$listerror) =
                 &Apache::lonnet::dirlist($url.$path,$udom,$uname,$getpropath);
             if (ref($sublistref) eq 'ARRAY') {
@@ -10019,6 +11505,9 @@ sub ask_for_embedded_content {
             }
         }
     }
+    
+    # fills $currfile, hash file name -> 1 or [$size,$mtime]
+    # for files in $url or $fileloc (target directory) in some contexts
     my %currfile;
     if (($actionurl eq '/adm/portfolio') ||
         ($actionurl eq '/adm/coursegrp_portfolio')) {
@@ -10057,6 +11546,8 @@ sub ask_for_embedded_content {
             }
         }
     }
+    # updates $pathchanges, $existing, $numexisting, $newfiles and $unused for files that
+    # are not in subdirectories, using $currfile
     foreach my $file (keys(%dependencies)) {
         if (exists($currfile{$file})) {
             unless ($mapping{$file} eq $file) {
@@ -10085,17 +11576,25 @@ sub ask_for_embedded_content {
             $unused{$file} = 1;
         }
     }
+    
+    # returns some results for coursedocs paste and syllabus rewrites ($output is undef)
     if (($actionurl eq '/adm/coursedocs') && (ref($args) eq 'HASH') &&
         ($args->{'context'} eq 'paste')) {
         $counter = scalar(keys(%existing));
         $numpathchg = scalar(keys(%pathchanges));
         return ($output,$counter,$numpathchg,\%existing);
-    } elsif (($actionurl eq "/public/$cdom/$cnum/syllabus") &&
+    } elsif (($actionurl eq "/public/$cdom/$cnum/syllabus") && 
              (ref($args) eq 'HASH') && ($args->{'context'} eq 'rewrites')) {
         $counter = scalar(keys(%existing));
         $numpathchg = scalar(keys(%pathchanges));
         return ($output,$counter,$numpathchg,\%existing,\%mapping);
     }
+    
+    # returns HTML otherwise, with dependency results and to ask for more uploads
+    
+    # $upload_output: missing dependencies (with upload form)
+    # $modify_output: uploaded dependencies (in use)
+    # $delete_output: files no longer in use (unused files are not listed for londocs, bug?)
     foreach my $embed_file (sort {lc($a) cmp lc($b)} keys(%newfiles)) {
         if ($actionurl eq '/adm/dependencies') {
             next if ($embed_file =~ m{^\w+://});
@@ -10319,7 +11818,7 @@ sub ask_for_embedded_content {
 
 Performs clean-up of directories, subdirectories and filename in an
 embedded object, referenced in an HTML file which is being uploaded
-to a course or portfolio, where
+to a course or portfolio, where 
 "Upload embedded images/multimedia files if HTML file" checkbox was
 checked.
 
@@ -10338,7 +11837,7 @@ sub clean_path {
         @contents = ($embed_file);
     }
     my $lastidx = scalar(@contents)-1;
-    for (my $i=0; $i<=$lastidx; $i++) {
+    for (my $i=0; $i<=$lastidx; $i++) { 
         $contents[$i]=~s{\\}{/}g;
         $contents[$i]=~s/\s+/\_/g;
         $contents[$i]=~s{[^/\w\.\-]}{}g;
@@ -10677,7 +12176,7 @@ sub modify_html_refs {
     }
     my (%allfiles,%codebase,$output,$content);
     my @changes = &get_env_multiple('form.namechange');
-    unless ((@changes > 0)  || ($context eq 'syllabus')) {
+    unless ((@changes > 0) || ($context eq 'syllabus')) {
         if (wantarray) {
             return ('',0,0); 
         } else {
@@ -10709,7 +12208,7 @@ sub modify_html_refs {
                 return;
             }
         } 
-        if (open(my $fh,"<$container")) {
+        if (open(my $fh,'<',$container)) {
             $content = join('', <$fh>);
             close($fh);
         } else {
@@ -10774,7 +12273,7 @@ sub modify_html_refs {
                         }
                     }
                 } else {
-                    if (open(my $fh,">$container")) {
+                    if (open(my $fh,'>',$container)) {
                         print $fh $content;
                         close($fh);
                         $output = '<p>'.&mt('Updated [quant,_1,reference] in [_2].',
@@ -10812,7 +12311,7 @@ sub modify_html_refs {
                         }
                     }
                     if ($rewrites) {
-                        my $saveresult;
+                        my $saveresult; 
                         my $url = &Apache::lonnet::store_edited_file($container,$content,$udom,$uname,\$saveresult);
                         if ($url eq $container) {
                             my ($fname) = ($container =~ m{/([^/]+)$});
@@ -11043,7 +12542,7 @@ sub decompress_form {
                         "$topdir/media/player.swf",
                         "$topdir/media/swfobject.js",
                         "$topdir/media/expressInstall.swf");
-        my @camtasia8 = ("$topdir/","$topdir/$topdir.html",
+        my @camtasia8_1 = ("$topdir/","$topdir/$topdir.html",
                          "$topdir/$topdir.mp4",
                          "$topdir/$topdir\_config.xml",
                          "$topdir/$topdir\_controller.swf",
@@ -11065,13 +12564,36 @@ sub decompress_form {
                          "$topdir/skins/express_show/",
                          "$topdir/skins/express_show/player-min.css",
                          "$topdir/skins/express_show/spritesheet.png");
+        my @camtasia8_4 = ("$topdir/","$topdir/$topdir.html",
+                         "$topdir/$topdir.mp4",
+                         "$topdir/$topdir\_config.xml",
+                         "$topdir/$topdir\_controller.swf",
+                         "$topdir/$topdir\_embed.css",
+                         "$topdir/$topdir\_First_Frame.png",
+                         "$topdir/$topdir\_player.html",
+                         "$topdir/$topdir\_Thumbnails.png",
+                         "$topdir/playerProductInstall.swf",
+                         "$topdir/scripts/",
+                         "$topdir/scripts/config_xml.js",
+                         "$topdir/scripts/techsmith-smart-player.min.js",
+                         "$topdir/skins/",
+                         "$topdir/skins/configuration_express.xml",
+                         "$topdir/skins/express_show/",
+                         "$topdir/skins/express_show/spritesheet.min.css",
+                         "$topdir/skins/express_show/spritesheet.png",
+                         "$topdir/skins/express_show/techsmith-smart-player.min.css");
         my @diffs = &compare_arrays(\@paths,\@camtasia6);
         if (@diffs == 0) {
             $is_camtasia = 6;
         } else {
-            @diffs = &compare_arrays(\@paths,\@camtasia8);
+            @diffs = &compare_arrays(\@paths,\@camtasia8_1);
             if (@diffs == 0) {
                 $is_camtasia = 8;
+            } else {
+                @diffs = &compare_arrays(\@paths,\@camtasia8_4);
+                if (@diffs == 0) {
+                    $is_camtasia = 8;
+                }
             }
         }
     }
@@ -11268,6 +12790,18 @@ sub decompress_uploaded_file {
 
 sub process_decompression {
     my ($docudom,$docuname,$file,$destination,$dir_root,$hiddenelem) = @_;
+    unless (($dir_root eq '/userfiles') && ($destination =~ m{^(docs|supplemental)/(default|\d+)/\d+$})) {
+        return '<p class="LC_error">'.&mt('Not extracted.').'<br />'.
+               &mt('Unexpected file path.').'</p>'."\n";
+    }
+    unless (($docudom =~ /^$match_domain$/) && ($docuname =~ /^$match_courseid$/)) {
+        return '<p class="LC_error">'.&mt('Not extracted.').'<br />'.
+               &mt('Unexpected course context.').'</p>'."\n";
+    }
+    unless ($file eq &Apache::lonnet::clean_filename($file)) {
+        return '<p class="LC_error">'.&mt('Not extracted.').'<br />'.
+               &mt('Filename contained unexpected characters.').'</p>'."\n";
+    }
     my ($dir,$error,$warning,$output);
     if ($file !~ /\.(zip|tar|bz2|gz|tar.gz|tar.bz2|tgz)$/i) {
         $error = &mt('Filename not a supported archive file type.').
@@ -11302,30 +12836,44 @@ sub process_decompression {
                 }
             }
             my $numskip = scalar(@to_skip);
-            if (($numskip > 0) && 
-                ($numskip == $env{'form.archive_itemcount'})) {
+            my $numoverwrite = scalar(@to_overwrite);
+            if (($numskip) && (!$numoverwrite)) { 
                 $warning = &mt('All items in the archive file already exist, and no overwriting of existing files has been requested.');         
             } elsif ($dir eq '') {
                 $error = &mt('Directory containing archive file unavailable.');
             } elsif (!$error) {
                 my ($decompressed,$display);
-                if ($numskip > 0) {
+                if (($numskip) || ($numoverwrite)) {
                     my $tempdir = time.'_'.$$.int(rand(10000));
                     mkdir("$dir/$tempdir",0755);
-                    system("mv $dir/$file $dir/$tempdir/$file");
-                    ($decompressed,$display) = 
-                        &decompress_uploaded_file($file,"$dir/$tempdir");
-                    foreach my $item (@to_skip) {
-                        if (($item ne '') && ($item !~ /\.\./)) {
-                            if (-f "$dir/$tempdir/$item") { 
-                                unlink("$dir/$tempdir/$item");
-                            } elsif (-d "$dir/$tempdir/$item") {
-                                system("rm -rf $dir/$tempdir/$item");
+                    if (&File::Copy::move("$dir/$file","$dir/$tempdir/$file")) {
+                        ($decompressed,$display) = 
+                            &decompress_uploaded_file($file,"$dir/$tempdir");
+                        foreach my $item (@to_skip) {
+                            if (($item ne '') && ($item !~ /\.\./)) {
+                                if (-f "$dir/$tempdir/$item") { 
+                                    unlink("$dir/$tempdir/$item");
+                                } elsif (-d "$dir/$tempdir/$item") {
+                                    &File::Path::remove_tree("$dir/$tempdir/$item",{ safe => 1 });
+                                }
+                            }
+                        }
+                        foreach my $item (@to_overwrite) {
+                            if ((-e "$dir/$tempdir/$item") && (-e "$dir/$item")) {
+                                if (($item ne '') && ($item !~ /\.\./)) {
+                                    if (-f "$dir/$item") {
+                                        unlink("$dir/$item");
+                                    } elsif (-d "$dir/$item") {
+                                        &File::Path::remove_tree("$dir/$item",{ safe => 1 });
+                                    }
+                                    &File::Copy::move("$dir/$tempdir/$item","$dir/$item");
+                                }
                             }
                         }
+                        if (&File::Copy::move("$dir/$tempdir/$file","$dir/$file")) {
+                            &File::Path::remove_tree("$dir/$tempdir",{ safe => 1 });
+                        }
                     }
-                    system("mv $dir/$tempdir/* $dir");
-                    rmdir("$dir/$tempdir");   
                 } else {
                     ($decompressed,$display) = 
                         &decompress_uploaded_file($file,$dir);
@@ -11343,8 +12891,7 @@ sub process_decompression {
                     if (ref($newdirlistref) eq 'ARRAY') {
                         foreach my $dir_line (@{$newdirlistref}) {
                             my ($item,undef,undef,$testdir)=split(/\&/,$dir_line,5);
-                            unless (($item =~ /^\.+$/) || ($item eq $file) || 
-                                    ((@to_skip > 0) && (grep(/^\Q$item\E$/,@to_skip)))) {
+                            unless (($item =~ /^\.+$/) || ($item eq $file)) {
                                 push(@newitems,$item);
                                 if ($dirptr&$testdir) {
                                     $is_dir{$item} = 1;
@@ -11399,7 +12946,7 @@ sub process_decompression {
                                     $env{'form.archive_title_'.$i} = $env{'form.camtasia_foldername'};
                                     $displayed{'folder'} = $i;
                                 } elsif ((($item eq "$contents[0]/index.html") && ($version == 6)) ||
-                                         (($item eq "$contents[0]/$contents[0]".'.html') && ($version == 8))) {
+                                         (($item eq "$contents[0]/$contents[0]".'.html') && ($version == 8))) { 
                                     $env{'form.archive_'.$i} = 'display';
                                     $env{'form.archive_title_'.$i} = $env{'form.camtasia_moviename'};
                                     $displayed{'web'} = $i;
@@ -11829,7 +13376,7 @@ END
 sub process_extracted_files {
     my ($context,$docudom,$docuname,$destination,$dir_root,$hiddenelem) = @_;
     my $numitems = $env{'form.archive_count'};
-    return unless ($numitems);
+    return if ((!$numitems) || ($numitems =~ /\D/));
     my @ids=&Apache::lonnet::current_machine_ids();
     my ($prefix,$pathtocheck,$dir,$ishome,$error,$warning,%toplevelitems,%is_dir,
         %folders,%containers,%mapinner,%prompttofetch);
@@ -11842,7 +13389,7 @@ sub process_extracted_files {
     } else {
         $prefix = $Apache::lonnet::perlvar{'lonDocRoot'};
         $pathtocheck = "$dir_root/$docudom/$docuname/$destination";
-        $dir = "$dir_root/$docudom/$docuname";    
+        $dir = "$dir_root/$docudom/$docuname";
     }
     my $currdir = "$dir_root/$destination";
     (my $docstype,$mapinner{'0'}) = ($destination =~ m{^(docs|supplemental)/(\w+)/});
@@ -11851,7 +13398,7 @@ sub process_extracted_files {
         $folders{'0'} = $items[-2];
         if ($env{'form.folderpath'} =~ /\:1$/) {
             $containers{'0'}='page';
-        } else {
+        } else {  
             $containers{'0'}='sequence';
         }
     }
@@ -11931,7 +13478,9 @@ sub process_extracted_files {
                                                         '.'.$containers{$outer},1,1);
                             $newseqid{$i} = $newidx;
                             unless ($errtext) {
-                                $result .=  '<li>'.&mt('Folder: [_1] added to course',$docstitle).'</li>'."\n";
+                                $result .=  '<li>'.&mt('Folder: [_1] added to course',
+                                                       &HTML::Entities::encode($docstitle,'<>&"')).
+                                            '</li>'."\n";
                             }
                         }
                     } else {
@@ -11940,38 +13489,47 @@ sub process_extracted_files {
                             my $url = '/uploaded/'.$docudom.'/'.$docuname.'/'.
                                       $docstype.'/'.$mapinner{$outer}.'/'.$newidx.'/'.
                                       $title;
-                            if (!-e "$prefix$dir/$docstype/$mapinner{$outer}") {
-                                mkdir("$prefix$dir/$docstype/$mapinner{$outer}",0755);
-                            }
-                            if (!-e "$prefix$dir/$docstype/$mapinner{$outer}/$newidx") {
-                                mkdir("$prefix$dir/$docstype/$mapinner{$outer}/$newidx");
-                            }
-                            if (-e "$prefix$dir/$docstype/$mapinner{$outer}/$newidx") {
-                                system("mv $prefix$path $prefix$dir/$docstype/$mapinner{$outer}/$newidx/$title");
-                                $newdest{$i} = "$prefix$dir/$docstype/$mapinner{$outer}/$newidx";
-                                unless ($ishome) {
-                                    my $fetch = "$newdest{$i}/$title";
-                                    $fetch =~ s/^\Q$prefix$dir\E//;
-                                    $prompttofetch{$fetch} = 1;
+                            if (($outer !~ /\D/) && ($mapinner{$outer} !~ /\D/) && ($newidx !~ /\D/)) {
+                                if (!-e "$prefix$dir/$docstype/$mapinner{$outer}") {
+                                    mkdir("$prefix$dir/$docstype/$mapinner{$outer}",0755);
                                 }
-                            }
-                            $LONCAPA::map::resources[$newidx]=
-                                $docstitle.':'.$url.':false:normal:res';
-                            push(@LONCAPA::map::order, $newidx);
-                            my ($outtext,$errtext)=
-                                &LONCAPA::map::storemap('/uploaded/'.$docudom.'/'.
-                                                        $docuname.'/'.$folders{$outer}.
-                                                        '.'.$containers{$outer},1,1);
-                            unless ($errtext) {
-                                if (-e "$prefix$dir/$docstype/$mapinner{$outer}/$newidx/$title") {
-                                    $result .= '<li>'.&mt('File: [_1] added to course',$docstitle).'</li>'."\n";
+                                if (!-e "$prefix$dir/$docstype/$mapinner{$outer}/$newidx") {
+                                    mkdir("$prefix$dir/$docstype/$mapinner{$outer}/$newidx");
+                                }
+                                if (-e "$prefix$dir/$docstype/$mapinner{$outer}/$newidx") {
+                                    if (rename("$prefix$path","$prefix$dir/$docstype/$mapinner{$outer}/$newidx/$title")) {
+                                        $newdest{$i} = "$prefix$dir/$docstype/$mapinner{$outer}/$newidx";
+                                        unless ($ishome) {
+                                            my $fetch = "$newdest{$i}/$title";
+                                            $fetch =~ s/^\Q$prefix$dir\E//;
+                                            $prompttofetch{$fetch} = 1;
+                                        }
+                                    }
+                                }
+                                $LONCAPA::map::resources[$newidx]=
+                                    $docstitle.':'.$url.':false:normal:res';
+                                push(@LONCAPA::map::order, $newidx);
+                                my ($outtext,$errtext)=
+                                    &LONCAPA::map::storemap('/uploaded/'.$docudom.'/'.
+                                                            $docuname.'/'.$folders{$outer}.
+                                                            '.'.$containers{$outer},1,1);
+                                unless ($errtext) {
+                                    if (-e "$prefix$dir/$docstype/$mapinner{$outer}/$newidx/$title") {
+                                        $result .= '<li>'.&mt('File: [_1] added to course',
+                                                              &HTML::Entities::encode($docstitle,'<>&"')).
+                                                   '</li>'."\n";
+                                    }
                                 }
+                            } else {
+                                $warning .= &mt('Item extracted from archive: [_1] has unexpected path.',
+                                                &HTML::Entities::encode($path,'<>&"')).'<br />';
                             }
                         }
                     }
                 }
             } else {
-                $warning .= &mt('Item extracted from archive: [_1] has unexpected path.',$path).'<br />';
+                $warning .= &mt('Item extracted from archive: [_1] has unexpected path.',
+                                &HTML::Entities::encode($path,'<>&"')).'<br />'; 
             }
         }
         for (my $i=1; $i<=$numitems; $i++) {
@@ -11993,7 +13551,7 @@ sub process_extracted_files {
                         }
                         if ($itemidx eq '') {
                             $itemidx =  0;
-                        }
+                        } 
                         if (grep(/^\Q$referrer{$i}\E$/,@archdirs)) {
                             if ($mapinner{$referrer{$i}}) {
                                 $fullpath = "$prefix$dir/$docstype/$mapinner{$referrer{$i}}";
@@ -12032,7 +13590,9 @@ sub process_extracted_files {
                         }
                         if ($fullpath ne '') {
                             if (-e "$prefix$path") {
-                                system("mv $prefix$path $fullpath/$title");
+                                unless (rename("$prefix$path","$fullpath/$title")) {
+                                     $warning .= &mt('Failed to rename dependency').'<br />';
+                                }
                             }
                             if (-e "$fullpath/$title") {
                                 my $showpath;
@@ -12040,22 +13600,27 @@ sub process_extracted_files {
                                     $showpath = "$relpath/$title";
                                 } else {
                                     $showpath = "/$title";
+                                } 
+                                $result .= '<li>'.&mt('[_1] included as a dependency',
+                                                      &HTML::Entities::encode($showpath,'<>&"')).
+                                           '</li>'."\n";
+                                unless ($ishome) {
+                                    my $fetch = "$fullpath/$title";
+                                    $fetch =~ s/^\Q$prefix$dir\E//; 
+                                    $prompttofetch{$fetch} = 1;
                                 }
-                                $result .= '<li>'.&mt('[_1] included as a dependency',$showpath).'</li>'."\n";
-                            }
-                            unless ($ishome) {
-                                my $fetch = "$fullpath/$title";
-                                $fetch =~ s/^\Q$prefix$dir\E//;
-                                $prompttofetch{$fetch} = 1;
                             }
                         }
                     }
                 } elsif ($env{'form.archive_'.$referrer{$i}} eq 'discard') {
                     $warning .= &mt('[_1] is a dependency of [_2], which was discarded.',
-                                    $path,$env{'form.archive_content_'.$referrer{$i}}).'<br />';
+                                    &HTML::Entities::encode($path,'<>&"'),
+                                    &HTML::Entities::encode($env{'form.archive_content_'.$referrer{$i}},'<>&"')).
+                                '<br />';
                 }
             } else {
-                $warning .= &mt('Item extracted from archive: [_1] has unexpected path.',$path).'<br />';
+                $warning .= &mt('Item extracted from archive: [_1] has unexpected path.',
+                                &HTML::Entities::encode($path)).'<br />';
             }
         }
         if (keys(%todelete)) {
@@ -12329,12 +13894,15 @@ sub upfile_store {
     $env{'form.upfile'}=~s/\n+/\n/gs;
     $env{'form.upfile'}=~s/\n+$//gs;
 
-    my $datatoken=$env{'user.name'}.'_'.$env{'user.domain'}.
-	'_enroll_'.$env{'request.course.id'}.'_'.time.'_'.$$;
+    my $datatoken = &valid_datatoken($env{'user.name'}.'_'.$env{'user.domain'}.
+                                     '_enroll_'.$env{'request.course.id'}.'_'.
+                                     time.'_'.$$);
+    return if ($datatoken eq '');
+
     {
         my $datafile = $r->dir_config('lonDaemons').
                            '/tmp/'.$datatoken.'.tmp';
-        if ( open(my $fh,">$datafile") ) {
+        if ( open(my $fh,'>',$datafile) ) {
             print $fh $env{'form.upfile'};
             close($fh);
         }
@@ -12344,21 +13912,22 @@ sub upfile_store {
 
 =pod
 
-=item * &load_tmp_file($r)
+=item * &load_tmp_file($r,$datatoken)
 
 Load uploaded file from tmp, $r should be the HTTP Request object,
-needs $env{'form.datatoken'},
+$datatoken is the name to assign to the temporary file.
 sets $env{'form.upfile'} to the contents of the file
 
 =cut
 
 sub load_tmp_file {
-    my $r=shift;
+    my ($r,$datatoken) = @_;
+    return if ($datatoken eq '');
     my @studentdata=();
     {
         my $studentfile = $r->dir_config('lonDaemons').
-                              '/tmp/'.$env{'form.datatoken'}.'.tmp';
-        if ( open(my $fh,"<$studentfile") ) {
+                              '/tmp/'.$datatoken.'.tmp';
+        if ( open(my $fh,'<',$studentfile) ) {
             @studentdata=<$fh>;
             close($fh);
         }
@@ -12366,6 +13935,14 @@ sub load_tmp_file {
     $env{'form.upfile'}=join('',@studentdata);
 }
 
+sub valid_datatoken {
+    my ($datatoken) = @_;
+    if ($datatoken =~ /^$match_username\_$match_domain\_enroll_$match_domain\_$match_courseid\_\d+_\d+$/) {
+        return $datatoken;
+    }
+    return;
+}
+
 =pod
 
 =item * &upfile_record_sep()
@@ -12806,7 +14383,7 @@ sub DrawBarGraph {
         @Labels = @$labels;
     } else {
         for (my $i=0;$i<@{$Values[0]};$i++) {
-            push (@Labels,$i+1);
+            push(@Labels,$i+1);
         }
     }
     #
@@ -13245,15 +14822,22 @@ generated by lonerrorhandler.pm, CHECKRP
 lonsupportreq.pm, loncoursequeueadmin.pm, searchcat.pl respectively.
 
 Inputs:
-defmail (scalar - email address of default recipient),
+defmail (scalar - email address of default recipient), 
 mailing type (scalar: errormail, packagesmail, helpdeskmail,
 requestsmail, updatesmail, or idconflictsmail).
 
 defdom (domain for which to retrieve configuration settings),
 
-origmail (scalar - email address of recipient from loncapa.conf,
+origmail (scalar - email address of recipient from loncapa.conf, 
 i.e., predates configuration by DC via domainprefs.pm
 
+$requname username of requester (if mailing type is helpdeskmail)
+
+$requdom domain of requester (if mailing type is helpdeskmail)
+
+$reqemail e-mail address of requester (if mailing type is helpdeskmail)
+
+
 Returns: comma separated list of addresses to which to send e-mail.
 
 =back
@@ -13263,11 +14847,11 @@ Returns: comma separated list of address
 ############################################################
 ############################################################
 sub build_recipient_list {
-    my ($defmail,$mailing,$defdom,$origmail) = @_;
+    my ($defmail,$mailing,$defdom,$origmail,$requname,$requdom,$reqemail) = @_;
     my @recipients;
-    my $otheremails;
+    my ($otheremails,$lastresort,$allbcc,$addtext);
     my %domconfig =
-         &Apache::lonnet::get_dom('configuration',['contacts'],$defdom);
+        &Apache::lonnet::get_dom('configuration',['contacts'],$defdom);
     if (ref($domconfig{'contacts'}) eq 'HASH') {
         if (exists($domconfig{'contacts'}{$mailing})) {
             if (ref($domconfig{'contacts'}{$mailing}) eq 'HASH') {
@@ -13279,14 +14863,183 @@ sub build_recipient_list {
                             push(@recipients,$addr);
                         }
                     }
-                    $otheremails = $domconfig{'contacts'}{$mailing}{'others'};
+                }
+                $otheremails = $domconfig{'contacts'}{$mailing}{'others'};
+                if ($mailing eq 'helpdeskmail') {
+                    if ($domconfig{'contacts'}{$mailing}{'bcc'}) {
+                        my @bccs = split(/,/,$domconfig{'contacts'}{$mailing}{'bcc'});
+                        my @ok_bccs;
+                        foreach my $bcc (@bccs) {
+                            $bcc =~ s/^\s+//g;
+                            $bcc =~ s/\s+$//g;
+                            if ($bcc =~ m/^[^\@]+\@[^\@]+$/) {
+                                if (!(grep(/^\Q$bcc\E$/,@ok_bccs))) {
+                                    push(@ok_bccs,$bcc);
+                                }
+                            }
+                        }
+                        if (@ok_bccs > 0) {
+                            $allbcc = join(', ',@ok_bccs);
+                        }
+                    }
+                    $addtext = $domconfig{'contacts'}{$mailing}{'include'};
                 }
             }
         } elsif ($origmail ne '') {
-            push(@recipients,$origmail);
+            $lastresort = $origmail;
+        }
+        if ($mailing eq 'helpdeskmail') {
+            if ((ref($domconfig{'contacts'}{'overrides'}) eq 'HASH') &&
+                (keys(%{$domconfig{'contacts'}{'overrides'}}))) {
+                my ($inststatus,$inststatus_checked);
+                if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
+                    ($env{'user.domain'} ne 'public')) {
+                    $inststatus_checked = 1;
+                    $inststatus = $env{'environment.inststatus'};
+                }
+                unless ($inststatus_checked) {
+                    if (($requname ne '') && ($requdom ne '')) {
+                        if (($requname =~ /^$match_username$/) &&
+                            ($requdom =~ /^$match_domain$/) &&
+                            (&Apache::lonnet::domain($requdom))) {
+                            my $requhome = &Apache::lonnet::homeserver($requname,
+                                                                      $requdom);
+                            unless ($requhome eq 'no_host') {
+                                my %userenv = &Apache::lonnet::userenvironment($requdom,$requname,'inststatus');
+                                $inststatus = $userenv{'inststatus'};
+                                $inststatus_checked = 1;
+                            }
+                        }
+                    }
+                }
+                unless ($inststatus_checked) {
+                    if ($reqemail =~ /^[^\@]+\@[^\@]+$/) {
+                        my %srch = (srchby     => 'email',
+                                    srchdomain => $defdom,
+                                    srchterm   => $reqemail,
+                                    srchtype   => 'exact');
+                        my %srch_results = &Apache::lonnet::usersearch(\%srch);
+                        foreach my $uname (keys(%srch_results)) {
+                            if (ref($srch_results{$uname}{'inststatus'}) eq 'ARRAY') {
+                                $inststatus = join(',',@{$srch_results{$uname}{'inststatus'}});
+                                $inststatus_checked = 1;
+                                last;
+                            }
+                        }
+                        unless ($inststatus_checked) {
+                            my ($dirsrchres,%srch_results) = &Apache::lonnet::inst_directory_query(\%srch);
+                            if ($dirsrchres eq 'ok') {
+                                foreach my $uname (keys(%srch_results)) {
+                                    if (ref($srch_results{$uname}{'inststatus'}) eq 'ARRAY') {
+                                        $inststatus = join(',',@{$srch_results{$uname}{'inststatus'}});
+                                        $inststatus_checked = 1;
+                                        last;
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+                if ($inststatus ne '') {
+                    foreach my $status (split(/\:/,$inststatus)) {
+                        if (ref($domconfig{'contacts'}{'overrides'}{$status}) eq 'HASH') {
+                            my @contacts = ('adminemail','supportemail');
+                            foreach my $item (@contacts) {
+                                if ($domconfig{'contacts'}{'overrides'}{$status}{$item}) {
+                                    my $addr = $domconfig{'contacts'}{'overrides'}{$status};
+                                    if (!grep(/^\Q$addr\E$/,@recipients)) {
+                                        push(@recipients,$addr);
+                                    }
+                                }
+                            }
+                            $otheremails = $domconfig{'contacts'}{'overrides'}{$status}{'others'};
+                            if ($domconfig{'contacts'}{'overrides'}{$status}{'bcc'}) {
+                                my @bccs = split(/,/,$domconfig{'contacts'}{'overrides'}{$status}{'bcc'});
+                                my @ok_bccs;
+                                foreach my $bcc (@bccs) {
+                                    $bcc =~ s/^\s+//g;
+                                    $bcc =~ s/\s+$//g;
+                                    if ($bcc =~ m/^[^\@]+\@[^\@]+$/) {
+                                        if (!(grep(/^\Q$bcc\E$/,@ok_bccs))) {
+                                            push(@ok_bccs,$bcc);
+                                        }
+                                    }
+                                }
+                                if (@ok_bccs > 0) {
+                                    $allbcc = join(', ',@ok_bccs);
+                                }
+                            }
+                            $addtext = $domconfig{'contacts'}{'overrides'}{$status}{'include'};
+                            last;
+                        }
+                    }
+                }
+            }
         }
     } elsif ($origmail ne '') {
-        push(@recipients,$origmail);
+        $lastresort = $origmail;
+    }
+    if (($mailing eq 'helpdeskmail') && ($lastresort ne '')) {
+        unless (grep(/^\Q$defdom\E$/,&Apache::lonnet::current_machine_domains())) {
+            my $lonhost = $Apache::lonnet::perlvar{'lonHostID'};
+            my $machinedom = $Apache::lonnet::perlvar{'lonDefDomain'};
+            my %what = (
+                          perlvar => 1,
+                       );
+            my $primary = &Apache::lonnet::domain($defdom,'primary');
+            if ($primary) {
+                my $gotaddr;
+                my ($result,$returnhash) =
+                    &Apache::lonnet::get_remote_globals($primary,{ perlvar => 1 });
+                if (($result eq 'ok') && (ref($returnhash) eq 'HASH')) {
+                    if ($returnhash->{'lonSupportEMail'} =~ /^[^\@]+\@[^\@]+$/) {
+                        $lastresort = $returnhash->{'lonSupportEMail'};
+                        $gotaddr = 1;
+                    }
+                }
+                unless ($gotaddr) {
+                    my $uintdom = &Apache::lonnet::internet_dom($primary);
+                    my $intdom = &Apache::lonnet::internet_dom($lonhost);
+                    unless ($uintdom eq $intdom) {
+                        my %domconfig =
+                            &Apache::lonnet::get_dom('configuration',['contacts'],$machinedom);
+                        if (ref($domconfig{'contacts'}) eq 'HASH') {
+                            if (ref($domconfig{'contacts'}{'otherdomsmail'}) eq 'HASH') {
+                                my @contacts = ('adminemail','supportemail');
+                                foreach my $item (@contacts) {
+                                    if ($domconfig{'contacts'}{'otherdomsmail'}{$item}) {
+                                        my $addr = $domconfig{'contacts'}{$item};
+                                        if (!grep(/^\Q$addr\E$/,@recipients)) {
+                                            push(@recipients,$addr);
+                                        }
+                                    }
+                                }
+                                if ($domconfig{'contacts'}{'otherdomsmail'}{'others'}) {
+                                    $otheremails = $domconfig{'contacts'}{'otherdomsmail'}{'others'};
+                                }
+                                if ($domconfig{'contacts'}{'otherdomsmail'}{'bcc'}) {
+                                    my @bccs = split(/,/,$domconfig{'contacts'}{'otherdomsmail'}{'bcc'});
+                                    my @ok_bccs;
+                                    foreach my $bcc (@bccs) {
+                                        $bcc =~ s/^\s+//g;
+                                        $bcc =~ s/\s+$//g;
+                                        if ($bcc =~ m/^[^\@]+\@[^\@]+$/) {
+                                            if (!(grep(/^\Q$bcc\E$/,@ok_bccs))) {
+                                                push(@ok_bccs,$bcc);
+                                            }
+                                        }
+                                    }
+                                    if (@ok_bccs > 0) {
+                                        $allbcc = join(', ',@ok_bccs);
+                                    }
+                                }
+                                $addtext = $domconfig{'contacts'}{'otherdomsmail'}{'include'};
+                            }
+                        }
+                    }
+                }
+            }
+        }
     }
     if (defined($defmail)) {
         if ($defmail ne '') {
@@ -13306,8 +15059,102 @@ sub build_recipient_list {
             }
         }
     }
-    my $recipientlist = join(',',@recipients); 
-    return $recipientlist;
+    if ($mailing eq 'helpdeskmail') {
+        if ((!@recipients) && ($lastresort ne '')) {
+            push(@recipients,$lastresort);
+        }
+    } elsif ($lastresort ne '') {
+        if (!grep(/^\Q$lastresort\E$/,@recipients)) {
+            push(@recipients,$lastresort);
+        }
+    }
+    my $recipientlist = join(',',@recipients);
+    if (wantarray) {
+        return ($recipientlist,$allbcc,$addtext);
+    } else {
+        return $recipientlist;
+    }
+}
+
+############################################################
+############################################################
+
+=pod
+
+=over 4
+
+=item * &mime_email()
+
+Sends an email with a possible attachment
+
+Inputs:
+
+=over 4
+
+from -              Sender's email address
+
+to -                Email address of recipient
+
+subject -           Subject of email
+
+body -              Body of email
+
+cc_string -         Carbon copy email address
+
+bcc -               Blind carbon copy email address
+
+type -              File type of attachment
+
+attachment_path -   Path of file to be attached
+
+file_name -         Name of file to be attached
+
+attachment_text -   The body of an attachment of type "TEXT"
+
+=back
+
+=back
+
+=cut
+
+############################################################
+############################################################
+
+sub mime_email {
+    my ($from, $to, $subject, $body, $cc_string, $bcc, $attachment_path, 
+        $file_name, $attachment_text) = @_;
+    my $msg = MIME::Lite->new(
+             From    => $from,
+             To      => $to,
+             Subject => $subject,
+             Type    =>'TEXT',
+             Data    => $body,
+             );
+    if ($cc_string ne '') {
+        $msg->add("Cc" => $cc_string);
+    }
+    if ($bcc ne '') {
+        $msg->add("Bcc" => $bcc);
+    }
+    $msg->attr("content-type"         => "text/plain");
+    $msg->attr("content-type.charset" => "UTF-8");
+    # Attach file if given
+    if ($attachment_path) {
+        unless ($file_name) {
+            if ($attachment_path =~ m-/([^/]+)$-) { $file_name = $1; }
+        }
+        my ($type, $encoding) = MIME::Types::by_suffix($attachment_path);
+        $msg->attach(Type     => $type,
+                     Path     => $attachment_path,
+                     Filename => $file_name
+                     );
+    # Otherwise attach text if given
+    } elsif ($attachment_text) {
+        $msg->attach(Type => 'TEXT',
+                     Data => $attachment_text);
+    }
+    # Send it
+    $msg->send('sendmail');
 }
 
 ############################################################
@@ -13417,6 +15264,8 @@ sub extract_categories {
                     $trailstr = &mt('Official courses (with institutional codes)');
                 } elsif ($name eq 'communities') {
                     $trailstr = &mt('Communities');
+                } elsif ($name eq 'placement') {
+                    $trailstr = &mt('Placement Tests');
                 } else {
                     $trailstr = $name;
                 }
@@ -13531,12 +15380,15 @@ currcat - scalar with an & separated lis
 
 type    - scalar contains course type (Course or Community).
 
+disabled - scalar (optional) contains disabled="disabled" if input elements are
+           to be readonly (e.g., Domain Helpdesk role viewing course settings).
+
 Returns: $output (markup to be displayed) 
 
 =cut
 
 sub assign_categories_table {
-    my ($cathash,$currcat,$type) = @_;
+    my ($cathash,$currcat,$type,$disabled) = @_;
     my $output;
     if (ref($cathash) eq 'HASH') {
         my (@cats,@trails,%allitems,%idx,@jsarray,@path,$maxdepth);
@@ -13555,8 +15407,10 @@ sub assign_categories_table {
                     next if ($parent eq 'instcode');
                     if ($type eq 'Community') {
                         next unless ($parent eq 'communities');
+                    } elsif ($type eq 'Placement') {
+                        next unless ($parent eq 'placement');
                     } else {
-                        next if ($parent eq 'communities');
+                        next if (($parent eq 'communities') || ($parent eq 'placement'));
                     }
                     my $css_class = $itemcount%2?' class="LC_odd_row"':'';
                     my $item = &escape($parent).'::0';
@@ -13569,14 +15423,16 @@ sub assign_categories_table {
                     my $parent_title = $parent;
                     if ($parent eq 'communities') {
                         $parent_title = &mt('Communities');
+                    } elsif ($parent eq 'placement') {
+                        $parent_title = &mt('Placement Tests');
                     }
                     $table .= '<tr '.$css_class.'><td><span class="LC_nobreak">'.
                               '<input type="checkbox" name="usecategory" value="'.
-                              $item.'"'.$checked.' />'.$parent_title.'</span>'.
+                              $item.'"'.$checked.$disabled.' />'.$parent_title.'</span>'.
                               '<input type="hidden" name="catname" value="'.$parent.'" /></td>';
                     my $depth = 1;
                     push(@path,$parent);
-                    $table .= &assign_category_rows($itemcount,\@cats,$depth,$parent,\@path,\@currcategories);
+                    $table .= &assign_category_rows($itemcount,\@cats,$depth,$parent,\@path,\@currcategories,$disabled);
                     pop(@path);
                     $table .= '</tr><tr><td colspan="'.$maxdepth.'" class="LC_row_separator"></td></tr>';
                     $itemcount ++;
@@ -13615,12 +15471,15 @@ path - Array containing all categories b
 
 currcategories - reference to array of current categories assigned to the course
 
+disabled - scalar (optional) contains disabled="disabled" if input elements are
+           to be readonly (e.g., Domain Helpdesk role viewing course settings).
+
 Returns: $output (markup to be displayed).
 
 =cut
 
 sub assign_category_rows {
-    my ($itemcount,$cats,$depth,$parent,$path,$currcategories) = @_;
+    my ($itemcount,$cats,$depth,$parent,$path,$currcategories,$disabled) = @_;
     my ($text,$name,$item,$chgstr);
     if (ref($cats) eq 'ARRAY') {
         my $maxdepth = scalar(@{$cats});
@@ -13643,12 +15502,12 @@ sub assign_category_rows {
                     }
                     $text .= '<tr><td><span class="LC_nobreak"><label>'.
                              '<input type="checkbox" name="usecategory" value="'.
-                             $item.'"'.$checked.' />'.$name.'</label></span>'.
+                             $item.'"'.$checked.$disabled.' />'.$name.'</label></span>'.
                              '<input type="hidden" name="catname" value="'.$name.'" />'.
                              '</td><td>';
                     if (ref($path) eq 'ARRAY') {
                         push(@{$path},$name);
-                        $text .= &assign_category_rows($itemcount,$cats,$deeper,$name,$path,$currcategories);
+                        $text .= &assign_category_rows($itemcount,$cats,$deeper,$name,$path,$currcategories,$disabled);
                         pop(@{$path});
                     }
                     $text .= '</td></tr>';
@@ -13796,7 +15655,7 @@ sub commit_studentrole {
                     }
                 }
             } else {
-                if ($secchange) {       
+                if ($secchange) { 
                     $$logmsg .= &mt('Error when attempting section change for [_1] from old section "[_2]" to new section: "[_3]" in course [_4] -error:',$uname,$oldsec,$sec,$cid).' '.$modify_section_result.$linefeed;
                 } else {
                     $$logmsg .= &mt('Error when attempting to modify role for [_1] for section: "[_2]" in course [_3] -error:',$uname,$sec,$cid).' '.$modify_section_result.$linefeed;
@@ -13875,42 +15734,100 @@ sub check_clone {
 	my %clonedesc = &Apache::lonnet::coursedescription($cloneid,{'one_time' => 1});
         if ($args->{'crstype'} eq 'Community') {
             if ($clonedesc{'type'} ne 'Community') {
-                 $clonemsg = &mt('No new community created.').$linefeed.&mt('A new community could not be cloned from the specified original - [_1] - because it is a course not a community.',$args->{'clonecourse'}.':'.$args->{'clonedomain'});
+                $clonemsg = &mt('No new community created.').$linefeed.&mt('A new community could not be cloned from the specified original - [_1] - because it is a course not a community.',$args->{'clonecourse'}.':'.$args->{'clonedomain'});
                 return ($can_clone, $clonemsg, $cloneid, $clonehome);
             }
         }
-	if (($env{'request.role.domain'} eq $args->{'clonedomain'}) && 
+	if (($env{'request.role.domain'} eq $args->{'clonedomain'}) &&
             (&Apache::lonnet::allowed('ccc',$env{'request.role.domain'}))) {
 	    $can_clone = 1;
 	} else {
-	    my %clonehash = &Apache::lonnet::get('environment',['cloners'],
+	    my %clonehash = &Apache::lonnet::get('environment',['cloners','internal.coursecode'],
 						 $args->{'clonedomain'},$args->{'clonecourse'});
-	    my @cloners = split(/,/,$clonehash{'cloners'});
-            if (grep(/^\*$/,@cloners)) {
-                $can_clone = 1;
-            } elsif (grep(/^\*\:\Q$args->{'ccdomain'}\E$/,@cloners)) {
-                $can_clone = 1;
+            if ($clonehash{'cloners'} eq '') {
+                my %domdefs = &Apache::lonnet::get_domain_defaults($args->{'course_domain'});
+                if ($domdefs{'canclone'}) {
+                    unless ($domdefs{'canclone'} eq 'none') {
+                        if ($domdefs{'canclone'} eq 'domain') {
+                            if ($args->{'ccdomain'} eq $args->{'clonedomain'}) {
+                                $can_clone = 1;
+                            }
+                        } elsif (($clonehash{'internal.coursecode'}) && ($args->{'crscode'}) && 
+                                 ($args->{'clonedomain'} eq  $args->{'course_domain'})) {
+                            if (&Apache::lonnet::default_instcode_cloning($args->{'clonedomain'},$domdefs{'canclone'},
+                                                                          $clonehash{'internal.coursecode'},$args->{'crscode'})) {
+                                $can_clone = 1;
+                            }
+                        }
+                    }
+                }
             } else {
+	        my @cloners = split(/,/,$clonehash{'cloners'});
+                if (grep(/^\*$/,@cloners)) {
+                    $can_clone = 1;
+                } elsif (grep(/^\*\:\Q$args->{'ccdomain'}\E$/,@cloners)) {
+                    $can_clone = 1;
+                } elsif (grep(/^\Q$args->{'ccuname'}\E:\Q$args->{'ccdomain'}\E$/,@cloners)) {
+                    $can_clone = 1;
+                }
+                unless ($can_clone) {
+                    if (($clonehash{'internal.coursecode'}) && ($args->{'crscode'}) && 
+                        ($args->{'clonedomain'} eq  $args->{'course_domain'})) {
+                        my (%gotdomdefaults,%gotcodedefaults);
+                        foreach my $cloner (@cloners) {
+                            if (($cloner ne '*') && ($cloner !~ /^\*\:$match_domain$/) &&
+                                ($cloner !~ /^$match_username\:$match_domain$/) && ($cloner ne '')) {
+                                my (%codedefaults,@code_order);
+                                if (ref($gotcodedefaults{$args->{'clonedomain'}}) eq 'HASH') {
+                                    if (ref($gotcodedefaults{$args->{'clonedomain'}}{'defaults'}) eq 'HASH') {
+                                        %codedefaults = %{$gotcodedefaults{$args->{'clonedomain'}}{'defaults'}};
+                                    }
+                                    if (ref($gotcodedefaults{$args->{'clonedomain'}}{'order'}) eq 'ARRAY') {
+                                        @code_order = @{$gotcodedefaults{$args->{'clonedomain'}}{'order'}};
+                                    }
+                                } else {
+                                    &Apache::lonnet::auto_instcode_defaults($args->{'clonedomain'},
+                                                                            \%codedefaults,
+                                                                            \@code_order);
+                                    $gotcodedefaults{$args->{'clonedomain'}}{'defaults'} = \%codedefaults;
+                                    $gotcodedefaults{$args->{'clonedomain'}}{'order'} = \@code_order;
+                                }
+                                if (@code_order > 0) {
+                                    if (&Apache::lonnet::check_instcode_cloning(\%codedefaults,\@code_order,
+                                                                                $cloner,$clonehash{'internal.coursecode'},
+                                                                                $args->{'crscode'})) {
+                                        $can_clone = 1;
+                                        last;
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            unless ($can_clone) {
                 my $ccrole = 'cc';
                 if ($args->{'crstype'} eq 'Community') {
                     $ccrole = 'co';
                 }
 	        my %roleshash =
 		    &Apache::lonnet::get_my_roles($args->{'ccuname'},
-					 $args->{'ccdomain'},
-                                         'userroles',['active'],[$ccrole],
-					 [$args->{'clonedomain'}]);
-	        if (($roleshash{$args->{'clonecourse'}.':'.$args->{'clonedomain'}.':'.$ccrole}) || (grep(/^\Q$args->{'ccuname'}\E:\Q$args->{'ccdomain'}\E$/,@cloners))) {
+					          $args->{'ccdomain'},
+                                                  'userroles',['active'],[$ccrole],
+					          [$args->{'clonedomain'}]);
+	        if ($roleshash{$args->{'clonecourse'}.':'.$args->{'clonedomain'}.':'.$ccrole}) {
                     $can_clone = 1;
-                } elsif (&Apache::lonnet::is_course_owner($args->{'clonedomain'},$args->{'clonecourse'},$args->{'ccuname'},$args->{'ccdomain'})) {
+                } elsif (&Apache::lonnet::is_course_owner($args->{'clonedomain'},$args->{'clonecourse'},
+                                                          $args->{'ccuname'},$args->{'ccdomain'})) {
                     $can_clone = 1;
+                }
+            }
+            unless ($can_clone) {
+                if ($args->{'crstype'} eq 'Community') {
+                    $clonemsg = &mt('No new community created.').$linefeed.&mt('The new community could not be cloned from the existing community because the new community owner ([_1]) does not have cloning rights in the existing community ([_2]).',$args->{'ccuname'}.':'.$args->{'ccdomain'},$clonedesc{'description'});
                 } else {
-                    if ($args->{'crstype'} eq 'Community') {
-                        $clonemsg = &mt('No new community created.').$linefeed.&mt('The new community could not be cloned from the existing community because the new community owner ([_1]) does not have cloning rights in the existing community ([_2]).',$args->{'ccuname'}.':'.$args->{'ccdomain'},$clonedesc{'description'});
-                    } else {
-                        $clonemsg = &mt('No new course created.').$linefeed.&mt('The new course could not be cloned from the existing course because the new course owner ([_1]) does not have cloning rights in the existing course ([_2]).',$args->{'ccuname'}.':'.$args->{'ccdomain'},$clonedesc{'description'});
-                    }
-	        }
+                    $clonemsg = &mt('No new course created.').$linefeed.&mt('The new course could not be cloned from the existing course because the new course owner ([_1]) does not have cloning rights in the existing course ([_2]).',$args->{'ccuname'}.':'.$args->{'ccdomain'},$clonedesc{'description'});
+                }
 	    }
         }
     }
@@ -13918,7 +15835,8 @@ sub check_clone {
 }
 
 sub construct_course {
-    my ($args,$logmsg,$courseid,$crsudom,$crsunum,$udom,$uname,$context,$cnum,$category,$coderef) = @_;
+    my ($args,$logmsg,$courseid,$crsudom,$crsunum,$udom,$uname,$context,
+        $cnum,$category,$coderef) = @_;
     my $outcome;
     my $linefeed =  '<br />'."\n";
     if ($context eq 'auto') {
@@ -13946,7 +15864,12 @@ sub construct_course {
 #
 # Open course
 #
-    my $crstype = lc($args->{'crstype'});
+    my $showncrstype;
+    if ($args->{'crstype'} eq 'Placement') {
+        $showncrstype = 'placement test'; 
+    } else {  
+        $showncrstype = lc($args->{'crstype'});
+    }
     my %cenv=();
     $$courseid=&Apache::lonnet::createcourse($args->{'course_domain'},
                                              $args->{'cdescr'},
@@ -13963,7 +15886,7 @@ sub construct_course {
     # Utils::Course. This needs to at least be output as a comment
     # if anyone ever decides to not show this, and Utils::Course::new
     # will need to be suitably modified.
-    $outcome .= &mt('New LON-CAPA [_1] ID: [_2]',$crstype,$$courseid).$linefeed;
+    $outcome .= &mt('New LON-CAPA [_1] ID: [_2]',$showncrstype,$$courseid).$linefeed;
     if ($$courseid =~ /^error:/) {
         return (0,$outcome);
     }
@@ -13983,7 +15906,7 @@ sub construct_course {
 # Do the cloning
 #   
     if ($can_clone && $cloneid) {
-	$clonemsg = &mt('Cloning [_1] from [_2]',$crstype,$clonehome);
+	$clonemsg = &mt('Cloning [_1] from [_2]',$showncrstype,$clonehome);
 	if ($context ne 'auto') {
 	    $clonemsg = '<span class="LC_success">'.$clonemsg.'</span>';
 	}
@@ -14066,7 +15989,7 @@ sub construct_course {
                 my $addcheck = &Apache::lonnet::auto_new_course($$crsunum,$$crsudom,$class,$cenv{'internal.courseowner'});
                 $cenv{'internal.sectionnums'} .= $item.',';
                 unless ($addcheck eq 'ok') {
-                    push @badclasses, $class;
+                    push(@badclasses,$class);
                 }
             }
             $cenv{'internal.sectionnums'} =~ s/,$//;
@@ -14094,7 +16017,7 @@ sub construct_course {
                 my $addcheck =  &Apache::lonnet::auto_new_course($$crsunum,$$crsudom,$xl,$cenv{'internal.courseowner'});
                 $cenv{'internal.crosslistings'} .= $item.',';
                 unless ($addcheck eq 'ok') {
-                    push @badclasses, $xl;
+                    push(@badclasses,$xl);
                 }
             }
             $cenv{'internal.crosslistings'} =~ s/,$//;
@@ -14129,27 +16052,28 @@ sub construct_course {
     }
     if (@badclasses > 0) {
         my %lt=&Apache::lonlocal::texthash(
-                'tclb' => 'The courses listed below were included as sections or crosslistings affiliated with your new LON-CAPA course.  However, if automated course roster updates are enabled for this class, these particular sections/crosslistings will not contribute towards enrollment, because the user identified as the course owner for this LON-CAPA course',
-                'dnhr' => 'does not have rights to access enrollment in these classes',
-                'adby' => 'as determined by the policies of your institution on access to official classlists'
+                'tclb' => 'The courses listed below were included as sections or crosslistings affiliated with your new LON-CAPA course.',
+                'howi' => 'However, if automated course roster updates are enabled for this class, these particular sections/crosslistings are not guaranteed to contribute towards enrollment.',
+                'itis' => 'It is possible that rights to access enrollment for these classes will be available through assignment of co-owners.',
         );
-        my $badclass_msg = $cenv{'internal.courseowner'}.') - '.$lt{'dnhr'}.
-                           ' ('.$lt{'adby'}.')';
+        my $badclass_msg = $lt{'tclb'}.$linefeed.$lt{'howi'}.$linefeed.
+                           &mt('That is because the user identified as the course owner ([_1]) does not have rights to access enrollment in these classes, as determined by the policies of your institution on access to official classlists',$cenv{'internal.courseowner'}).$linefeed.$lt{'itis'};
         if ($context eq 'auto') {
             $outcome .= $badclass_msg.$linefeed;
+        } else {
             $outcome .= '<div class="LC_warning">'.$badclass_msg.$linefeed.'<ul>'."\n";
-            foreach my $item (@badclasses) {
-                if ($context eq 'auto') {
-                    $outcome .= " - $item\n";
-                } else {
-                    $outcome .= "<li>$item</li>\n";
-                }
-            }
+        }
+        foreach my $item (@badclasses) {
             if ($context eq 'auto') {
-                $outcome .= $linefeed;
+                $outcome .= " - $item\n";
             } else {
-                $outcome .= "</ul><br /><br /></div>\n";
+                $outcome .= "<li>$item</li>\n";
             }
+        }
+        if ($context eq 'auto') {
+            $outcome .= $linefeed;
+        } else {
+            $outcome .= "</ul><br /><br /></div>\n";
         } 
     }
     if ($args->{'no_end_date'}) {
@@ -14182,6 +16106,9 @@ sub construct_course {
        if ($args->{'setcontent'}) {
            $cenv{'question.email'}=$args->{'ccuname'}.':'.$args->{'ccdomain'};
        }
+       if ($args->{'setcomment'}) {
+           $cenv{'comment.email'}=$args->{'ccuname'}.':'.$args->{'ccdomain'};
+       }
     }
     if ($args->{'reshome'}) {
 	$cenv{'reshome'}=$args->{'reshome'}.'/';
@@ -14216,7 +16143,7 @@ sub construct_course {
             if (ref($crsinfo{$$crsudom.'_'.$$crsunum}) eq 'HASH') {
                 $crsinfo{$$crsudom.'_'.$$crsunum}{'uniquecode'} = $code;
                 my $putres = &Apache::lonnet::courseidput($$crsudom,\%crsinfo,$crsuhome,'notime');
-            }
+            } 
             if (ref($coderef)) {
                 $$coderef = $code;
             }
@@ -14288,6 +16215,30 @@ sub construct_course {
         $outcome .= ($fatal?$errtext:'write ok').$linefeed;
     }
 
+# 
+# Set params for Placement Tests
+#
+    if ($args->{'crstype'} eq 'Placement') {
+       my %storecontent; 
+       my $prefix=$$crsudom.'_'.$$crsunum.'.0.';
+       my %defaults = (
+                        buttonshide   => { value => 'yes',
+                                           type => 'string_yesno',},
+                        type          => { value => 'randomizetry',
+                                           type  => 'string_questiontype',},
+                        maxtries      => { value => 1,
+                                           type => 'int_pos',},
+                        problemstatus => { value => 'no',
+                                           type  => 'string_problemstatus',},
+                      );
+       foreach my $key (keys(%defaults)) {
+           $storecontent{$prefix.$key} = $defaults{$key}{'value'};
+           $storecontent{$prefix.$key.'.type'} = $defaults{$key}{'type'};
+       }
+       &Apache::lonnet::cput
+                 ('resourcedata',\%storecontent,$$crsudom,$$crsunum); 
+    }
+
     return (1,$outcome);
 }
 
@@ -14301,7 +16252,7 @@ sub make_unique_code {
     my $tries = 0;
     my $gotlock = &Apache::lonnet::newput_dom('uniquecodes',$lockhash,$cdom);
     my ($code,$error);
-
+  
     while (($gotlock ne 'ok') && ($tries<3)) {
         $tries ++;
         sleep 1;
@@ -14348,8 +16299,7 @@ sub generate_code {
 ############################################################
 ############################################################
 
-#SD
-# only Community and Course, or anything else?
+# Community, Course and Placement Test
 sub course_type {
     my ($cid) = @_;
     if (!defined($cid)) {
@@ -14367,17 +16317,20 @@ sub group_term {
     my %names = (
                   'Course' => 'group',
                   'Community' => 'group',
+                  'Placement' => 'group',
                 );
     return $names{$crstype};
 }
 
 sub course_types {
-    my @types = ('official','unofficial','community','textbook');
+    my @types = ('official','unofficial','community','textbook','placement','lti');
     my %typename = (
                          official   => 'Official course',
                          unofficial => 'Unofficial course',
                          community  => 'Community',
                          textbook   => 'Textbook course',
+                         placement  => 'Placement test',
+                         lti        => 'LTI provider',
                    );
     return (\@types,\%typename);
 }
@@ -14438,7 +16391,7 @@ sub escape_url {
     my ($url)   = @_;
     my @urlslices = split(/\//, $url,-1);
     my $lastitem = &escape(pop(@urlslices));
-    return join('/',@urlslices).'/'.$lastitem;
+    return &HTML::Entities::encode(join('/',@urlslices),"'").'/'.$lastitem;
 }
 
 sub compare_arrays {
@@ -14464,8 +16417,6 @@ sub init_user_environment {
 
     my $public=($username eq 'public' && $domain eq 'public');
 
-# See if old ID present, if so, remove
-
     my ($filename,$cookie,$userroles,$firstaccenv,$timerintenv);
     my $now=time;
 
@@ -14487,15 +16438,43 @@ sub init_user_environment {
 	}
 	if (!$cookie) { $cookie="publicuser_$oldest"; }
     } else {
-	# if this isn't a robot, kill any existing non-robot sessions
+	# See if old ID present, if so, remove if this isn't a robot,
+	# killing any existing non-robot sessions
 	if (!$args->{'robot'}) {
 	    opendir(DIR,$lonids);
 	    while ($filename=readdir(DIR)) {
 		if ($filename=~/^$username\_\d+\_$domain\_$authhost\.id$/) {
-		    unlink($lonids.'/'.$filename);
+                    if ($ENV{'SERVER_PORT'} == 443) {
+                        my $linkedfile;
+                        if (tie(my %oldenv,'GDBM_File',"$lonids/$cookie.id",
+                                &GDBM_READER(),0640)) {
+                            if (exists($oldenv{'user.linkedenv'})) {
+                                $linkedfile = $oldenv{'user.linkedenv'};
+                            }
+                            untie(%oldenv);
+                        }
+                        if (unlink($lonids.'/'.$filename)) {
+                            if ($linkedfile =~ /^[a-f0-9]+_linked\.id$/) {
+                                unlink($lonids.'/'.$linkedfile);
+                            }
+                        }
+                    } else {
+                        unlink($lonids.'/'.$filename);
+                    }
 		}
 	    }
 	    closedir(DIR);
+# If there is a undeleted lockfile for the user's paste buffer remove it.
+            my $namespace = 'nohist_courseeditor';
+            my $lockingkey = 'paste'."\0".'locked_num';
+            my %lockhash = &Apache::lonnet::get($namespace,[$lockingkey],
+                                                $domain,$username);
+            if (exists($lockhash{$lockingkey})) {
+                my $delresult = &Apache::lonnet::del($namespace,[$lockingkey],$domain,$username);
+                unless ($delresult eq 'ok') {
+                    &Apache::lonnet::logthis("Failed to delete paste buffer locking key in $namespace for ".$username.":".$domain." Result was: $delresult");
+                }
+            }
 	}
 # Give them a new cookie
 	my $id = ($args->{'robot'} ? 'robot'.$args->{'robot'}
@@ -14509,15 +16488,14 @@ sub init_user_environment {
     }
 # ------------------------------------ Check browser type and MathML capability
 
-    my ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
-        $clientunicode,$clientos,$clientmobile,$clientinfo) = &decode_user_agent($r);
+    my ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,$clientunicode,
+        $clientos,$clientmobile,$clientinfo,$clientosversion) = &decode_user_agent($r);
 
 # ------------------------------------------------------------- Get environment
 
     my %userenv = &Apache::lonnet::dump('environment',$domain,$username);
     my ($tmp) = keys(%userenv);
-    if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
-    } else {
+    if ($tmp =~ /^(con_lost|error|no_such_host)/i) {
 	undef(%userenv);
     }
     if (($userenv{'interface'}) && (!$form->{'interface'})) {
@@ -14543,6 +16521,7 @@ sub init_user_environment {
 	     "browser.os"         => $clientos,
              "browser.mobile"     => $clientmobile,
              "browser.info"       => $clientinfo,
+             "browser.osversion"  => $clientosversion,
 	     "server.domain"      => $Apache::lonnet::perlvar{'lonDefDomain'},
 	     "request.course.fn"  => '',
 	     "request.course.uri" => '',
@@ -14568,39 +16547,75 @@ sub init_user_environment {
             $env{'user.noloadbalance'} = $lonhost;
         }
 
-        my %is_adv = ( is_adv => $env{'user.adv'} );
-        my %domdef;
-        unless ($domain eq 'public') {
-            %domdef = &Apache::lonnet::get_domain_defaults($domain);
+        if ($form->{'noloadbalance'}) {
+            my @hosts = &Apache::lonnet::current_machine_ids();
+            my $hosthere = $form->{'noloadbalance'};
+            if (grep(/^\Q$hosthere\E$/,@hosts)) {
+                $initial_env{"user.noloadbalance"} = $hosthere;
+                $env{'user.noloadbalance'} = $hosthere;
+            }
         }
 
-        foreach my $tool ('aboutme','blog','webdav','portfolio') {
-            $userenv{'availabletools.'.$tool} = 
-                &Apache::lonnet::usertools_access($username,$domain,$tool,'reload',
-                                                  undef,\%userenv,\%domdef,\%is_adv);
-        }
+        unless ($domain eq 'public') {
+            my %is_adv = ( is_adv => $env{'user.adv'} );
+            my %domdef = &Apache::lonnet::get_domain_defaults($domain);
 
-        foreach my $crstype ('official','unofficial','community','textbook') {
-            $userenv{'canrequest.'.$crstype} =
-                &Apache::lonnet::usertools_access($username,$domain,$crstype,
-                                                  'reload','requestcourses',
-                                                  \%userenv,\%domdef,\%is_adv);
-        }
+            foreach my $tool ('aboutme','blog','webdav','portfolio') {
+                $userenv{'availabletools.'.$tool} = 
+                    &Apache::lonnet::usertools_access($username,$domain,$tool,'reload',
+                                                      undef,\%userenv,\%domdef,\%is_adv);
+            }
 
-        $userenv{'canrequest.author'} =
-            &Apache::lonnet::usertools_access($username,$domain,'requestauthor',
-                                        'reload','requestauthor',
-                                        \%userenv,\%domdef,\%is_adv);
-        my %reqauthor = &Apache::lonnet::get('requestauthor',['author_status','author'],
-                                             $domain,$username);
-        my $reqstatus = $reqauthor{'author_status'};
-        if ($reqstatus eq 'approval' || $reqstatus eq 'approved') {
-            if (ref($reqauthor{'author'}) eq 'HASH') {
-                $userenv{'requestauthorqueued'} = $reqstatus.':'.
-                                                  $reqauthor{'author'}{'timestamp'};
+            foreach my $crstype ('official','unofficial','community','textbook','placement','lti') {
+                $userenv{'canrequest.'.$crstype} =
+                    &Apache::lonnet::usertools_access($username,$domain,$crstype,
+                                                      'reload','requestcourses',
+                                                      \%userenv,\%domdef,\%is_adv);
             }
-        }
 
+            $userenv{'canrequest.author'} =
+                &Apache::lonnet::usertools_access($username,$domain,'requestauthor',
+                                                  'reload','requestauthor',
+                                                  \%userenv,\%domdef,\%is_adv);
+            my %reqauthor = &Apache::lonnet::get('requestauthor',['author_status','author'],
+                                                 $domain,$username);
+            my $reqstatus = $reqauthor{'author_status'};
+            if ($reqstatus eq 'approval' || $reqstatus eq 'approved') { 
+                if (ref($reqauthor{'author'}) eq 'HASH') {
+                    $userenv{'requestauthorqueued'} = $reqstatus.':'.
+                                                      $reqauthor{'author'}{'timestamp'};
+                }
+            }
+            my ($types,$typename) = &course_types();
+            if (ref($types) eq 'ARRAY') {
+                my @options = ('approval','validate','autolimit');
+                my $optregex = join('|',@options);
+                my (%willtrust,%trustchecked);
+                foreach my $type (@{$types}) {
+                    my $dom_str = $env{'environment.reqcrsotherdom.'.$type};
+                    if ($dom_str ne '') {
+                        my $updatedstr = '';
+                        my @possdomains = split(',',$dom_str);
+                        foreach my $entry (@possdomains) {
+                            my ($extdom,$extopt) = split(':',$entry);
+                            unless ($trustchecked{$extdom}) {
+                                $willtrust{$extdom} = &Apache::lonnet::will_trust('reqcrs',$domain,$extdom);
+                                $trustchecked{$extdom} = 1;
+                            }
+                            if ($willtrust{$extdom}) {
+                                $updatedstr .= $entry.',';
+                            }
+                        }
+                        $updatedstr =~ s/,$//;
+                        if ($updatedstr) {
+                            $userenv{'reqcrsotherdom.'.$type} = $updatedstr;
+                        } else {
+                            delete($userenv{'reqcrsotherdom.'.$type});
+                        }
+                    }
+                }
+            }
+        }
 	$env{'user.environment'} = "$lonids/$cookie.id";
 
 	if (tie(my %disk_env,'GDBM_File',"$lonids/$cookie.id",
@@ -14704,12 +16719,12 @@ and quotacheck.pl
 
 Inputs:
 
-filterlist - anonymous array of fields to include as potential filters
+filterlist - anonymous array of fields to include as potential filters 
 
 crstype - course type
 
 roleelement - fifth arg in selectcourse_link() populates fifth arg in javascript: opencrsbrowser() function, used
-              to pop-open a course selector (will contain "extra element").
+              to pop-open a course selector (will contain "extra element"). 
 
 multelement - if multiple course selections will be allowed, this will be a hidden form element: name: multiple; value: 1
 
@@ -14725,19 +16740,19 @@ cloneruname - username of owner of new c
 
 clonerudom - domain of owner of new course who wants to clone
 
-typeelem - text to use for left column in row containing course type (i.e., Course, Community or Course/Community)
+typeelem - text to use for left column in row containing course type (i.e., Course, Community or Course/Community) 
 
 codetitlesref - reference to array of titles of components in institutional codes (official courses)
 
 codedom - domain
 
-formname - value of form element named "form".
+formname - value of form element named "form". 
 
 fixeddom - domain, if fixed.
 
-prevphase - value to assign to form element named "phase" when going back to the previous screen
+prevphase - value to assign to form element named "phase" when going back to the previous screen  
 
-cnameelement - name of form element in form on opener page which will receive title of selected course
+cnameelement - name of form element in form on opener page which will receive title of selected course 
 
 cnumelement - name of form element in form on opener page which will receive courseID  of selected course
 
@@ -14828,15 +16843,19 @@ sub build_filters {
         $createdfilterform = &timebased_select_form('createdfilter',$filter);
     }
 
+    my $prefix = $crstype;
+    if ($crstype eq 'Placement') {
+        $prefix = 'Placement Test'
+    }
     my %lt = &Apache::lonlocal::texthash(
-                'cac' => "$crstype Activity",
-                'ccr' => "$crstype Created",
-                'cde' => "$crstype Title",
-                'cdo' => "$crstype Domain",
+                'cac' => "$prefix Activity",
+                'ccr' => "$prefix Created",
+                'cde' => "$prefix Title",
+                'cdo' => "$prefix Domain",
                 'ins' => 'Institutional Code',
                 'inc' => 'Institutional Categorization',
-                'cow' => "$crstype Owner/Co-owner",
-                'cop' => "$crstype Personnel Includes",
+                'cow' => "$prefix Owner/Co-owner",
+                'cop' => "$prefix Personnel Includes",
                 'cog' => 'Type',
              );
 
@@ -14844,6 +16863,8 @@ sub build_filters {
         my $typeval = 'Course';
         if ($crstype eq 'Community') {
             $typeval = 'Community';
+        } elsif ($crstype eq 'Placement') {
+            $typeval = 'Placement';
         }
         $typeselectform = '<input type="hidden" name="type" value="'.$typeval.'" />';
     } else {
@@ -14852,9 +16873,15 @@ sub build_filters {
             $typeselectform .= ' onchange="'.$onchange.'"';
         }
         $typeselectform .= '>'."\n";
-        foreach my $posstype ('Course','Community') {
+        foreach my $posstype ('Course','Community','Placement') {
+            my $shown;
+            if ($posstype eq 'Placement') {
+                $shown = &mt('Placement Test');
+            } else {
+                $shown = &mt($posstype);
+            }
             $typeselectform.='<option value="'.$posstype.'"'.
-                ($posstype eq $crstype ? ' selected="selected" ' : ''). ">".&mt($posstype)."</option>\n";
+                ($posstype eq $crstype ? ' selected="selected" ' : ''). ">".$shown."</option>\n";
         }
         $typeselectform.="</select>";
     }
@@ -14869,7 +16896,7 @@ sub build_filters {
         }
         $cloneableonlyform = '<span class="LC_nobreak"><label><input type="radio" name="cloneableonly" value="1" '.$cloneableon.'/>&nbsp;'.&mt('Required').'</label>'.('&nbsp;'x3).'<label><input type="radio" name="cloneableonly" value="" '.$cloneableoff.' />&nbsp;'.&mt('No restriction').'</label></span>';
         if ($formname eq 'ccrs') {
-            $cloneabletitle = &mt('Cloneable for').' '.$cloneruname.':'.$clonerudom;
+            $cloneabletitle = &mt('Cloneable for [_1]',$cloneruname.':'.$clonerudom);
         } else {
             $cloneabletitle = &mt('Cloneable by you');
         }
@@ -14879,7 +16906,7 @@ sub build_filters {
         if (exists($filter->{'instcodefilter'})) {
 #            if (($fixeddom) || ($formname eq 'requestcrs') ||
 #                ($formname eq 'modifycourse') || ($formname eq 'filterpicker')) {
-            if ($codedom) {
+            if ($codedom) { 
                 $officialjs = 1;
                 ($instcodeform,$jscript,$$numtitlesref) =
                     &Apache::courseclassifier::instcode_selectors($codedom,'filterpicker',
@@ -14913,7 +16940,12 @@ sub build_filters {
         $output .= '<input type="hidden" name="phase" value="courselist" />'."\n".
                    '<input type="hidden" name="prevphase" value="'.
                    $prevphase.'" />'."\n";
-    } elsif ($formname ne 'quotacheck') {
+    } elsif ($formname eq 'quotacheck') {
+        $output .= qq|
+<input type="hidden" name="sortby" value="" />
+<input type="hidden" name="sortorder" value="" />
+|;
+    } else {
         my $name_input;
         if ($cnameelement ne '') {
             $name_input = '<input type="hidden" name="cnameelement" value="'.
@@ -15003,7 +17035,7 @@ $typeelement
     return $jscript.$clonewarning.$output;
 }
 
-=pod
+=pod 
 
 =item * &timebased_select_form()
 
@@ -15018,7 +17050,7 @@ item - name of form element (sincefilter
 filter - anonymous hash of criteria and their values
 
 Returns: HTML for a select box contained a blank, then six time selections,
-         with value set in incoming form variables currently selected.
+         with value set in incoming form variables currently selected. 
 
 Side Effects: None
 
@@ -15055,7 +17087,7 @@ page load completion for page showing se
 
 Inputs: None
 
-Returns: markup containing updateFilters() and hideSearching() javascript functions.
+Returns: markup containing updateFilters() and hideSearching() javascript functions. 
 
 Side Effects: None
 
@@ -15094,7 +17126,7 @@ to retrieve a hash for which keys are co
 
 Inputs:
 
-dom - domain being searched
+dom - domain being searched 
 
 type - course type ('Course' or 'Community' or '.' if any).
 
@@ -15106,11 +17138,18 @@ cloneruname - optional username of new c
 
 clonerudom - optional domain of new course owner
 
-domcloner - Optional "domcloner" flag; has value=1 if user has ccc priv in domain being filtered by,
+domcloner - optional "domcloner" flag; has value=1 if user has ccc priv in domain being filtered by, 
             (used when DC is using course creation form)
 
 codetitles - reference to array of titles of components in institutional codes (official courses).
 
+cc_clone - escaped comma separated list of courses for which course cloner has active CC role
+           (and so can clone automatically)
+
+reqcrsdom - domain of new course, where search_courses is used to identify potential courses to clone
+
+reqinstcode - institutional code of new course, where search_courses is used to identify potential 
+              courses to clone 
 
 Returns: %courses - hash of courses satisfying search criteria, keys = course IDs, values are corresponding colon-separated escaped description, institutional code, owner and type.
 
@@ -15121,7 +17160,8 @@ Side Effects: None
 
 
 sub search_courses {
-    my ($dom,$type,$filter,$numtitles,$cloneruname,$clonerudom,$domcloner,$codetitles) = @_;
+    my ($dom,$type,$filter,$numtitles,$cloneruname,$clonerudom,$domcloner,$codetitles,
+        $cc_clone,$reqcrsdom,$reqinstcode) = @_;
     my (%courses,%showcourses,$cloner);
     if (($filter->{'ownerfilter'} ne '') ||
         ($filter->{'ownerdomfilter'} ne '')) {
@@ -15169,10 +17209,10 @@ sub search_courses {
                                              $filter->{'combownerfilter'},
                                              $filter->{'coursefilter'},
                                              undef,undef,$type,$regexpok,undef,undef,
-                                             undef,undef,$cloner,$env{'form.cc_clone'},
+                                             undef,undef,$cloner,$cc_clone,
                                              $filter->{'cloneableonly'},
                                              $createdbefore,$createdafter,undef,
-                                             $domcloner);
+                                             $domcloner,undef,$reqcrsdom,$reqinstcode);
     if (($filter->{'personfilter'} ne '') && ($filter->{'persondomfilter'} ne '')) {
         my $ccrole;
         if ($type eq 'Community') {
@@ -15192,7 +17232,7 @@ sub search_courses {
                 if (ref($courses{$cid}) eq 'HASH') {
                     if (ref($courses{$cid}{roles}) eq 'ARRAY') {
                         if (!grep(/^\Q$courserole\E$/,@{$courses{$cid}{roles}})) {
-                            push (@{$courses{$cid}{roles}},$courserole);
+                            push(@{$courses{$cid}{roles}},$courserole);
                         }
                     } else {
                         $courses{$cid}{roles} = [$courserole];
@@ -15206,61 +17246,244 @@ sub search_courses {
     return %courses;
 }
 
-
 =pod
 
 =back
 
+=head1 Routines for version requirements for current course.
+
+=over 4
+
+=item * &check_release_required()
+
+Compares required LON-CAPA version with version on server, and
+if required version is newer looks for a server with the required version.
+
+Looks first at servers in user's owen domain; if none suitable, looks at
+servers in course's domain are permitted to host sessions for user's domain.
+
+Inputs:
+
+$loncaparev - Version on current server (format: Major.Minor.Subrelease-datestamp)
+
+$courseid - Course ID of current course
+
+$rolecode - User's current role in course (for switchserver query string).
+
+$required - LON-CAPA version needed by course (format: Major.Minor).
+
+
+Returns:
+
+$switchserver - query string tp append to /adm/switchserver call (if 
+                current server's LON-CAPA version is too old. 
+
+$warning - Message is displayed if no suitable server could be found.
+
 =cut
 
+sub check_release_required {
+    my ($loncaparev,$courseid,$rolecode,$required) = @_;
+    my ($switchserver,$warning);
+    if ($required ne '') {
+        my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
+        my ($major,$minor) = ($loncaparev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
+        if ($reqdmajor ne '' && $reqdminor ne '') {
+            my $otherserver;
+            if (($major eq '' && $minor eq '') ||
+                (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
+                my ($userdomserver) = &Apache::lonnet::choose_server($env{'user.domain'},undef,$required,1);
+                my $switchlcrev =
+                    &Apache::lonnet::get_server_loncaparev($env{'user.domain'},
+                                                           $userdomserver);
+                my ($swmajor,$swminor) = ($switchlcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
+                if (($swmajor eq '' && $swminor eq '') || ($reqdmajor > $swmajor) ||
+                    (($reqdmajor == $swmajor) && ($reqdminor > $swminor))) {
+                    my $cdom = $env{'course.'.$courseid.'.domain'};
+                    if ($cdom ne $env{'user.domain'}) {
+                        my ($coursedomserver,$coursehostname) = &Apache::lonnet::choose_server($cdom,undef,$required,1);
+                        my $serverhomeID = &Apache::lonnet::get_server_homeID($coursehostname);
+                        my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
+                        my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
+                        my %udomdefaults = &Apache::lonnet::get_domain_defaults($env{'user.domain'});
+                        my $remoterev = &Apache::lonnet::get_server_loncaparev($serverhomedom,$coursedomserver);
+                        my $canhost =
+                            &Apache::lonnet::can_host_session($env{'user.domain'},
+                                                              $coursedomserver,
+                                                              $remoterev,
+                                                              $udomdefaults{'remotesessions'},
+                                                              $defdomdefaults{'hostedsessions'});
 
-sub build_release_hashes {
-    my ($checkparms,$checkresponsetypes,$checkcrstypes,$anonsurvey,$randomizetry) = @_;
-    return unless((ref($checkparms) eq 'HASH') && (ref($checkresponsetypes) eq 'HASH') &&
-                  (ref($checkcrstypes) eq 'HASH') && (ref($anonsurvey) eq 'HASH') &&
-                  (ref($randomizetry) eq 'HASH'));
-    foreach my $key (keys(%Apache::lonnet::needsrelease)) {
-        my ($item,$name,$value) = split(/:/,$key);
-        if ($item eq 'parameter') {
-            if (ref($checkparms->{$name}) eq 'ARRAY') {
-                unless(grep(/^\Q$name\E$/,@{$checkparms->{$name}})) {
-                    push(@{$checkparms->{$name}},$value);
+                        if ($canhost) {
+                            $otherserver = $coursedomserver;
+                        } else {
+                            $warning = &mt('Requires LON-CAPA version [_1].',$env{'course.'.$courseid.'.internal.releaserequired'}).'<br />'. &mt("No suitable server could be found amongst servers in either your own domain or in the course's domain.");
+                        }
+                    } else {
+                        $warning = &mt('Requires LON-CAPA version [_1].',$env{'course.'.$courseid.'.internal.releaserequired'}).'<br />'.&mt("No suitable server could be found amongst servers in your own domain (which is also the course's domain).");
+                    }
+                } else {
+                    $otherserver = $userdomserver;
                 }
-            } else {
-                push(@{$checkparms->{$name}},$value);
             }
-        } elsif ($item eq 'resourcetag') {
-            if ($name eq 'responsetype') {
-                $checkresponsetypes->{$value} = $Apache::lonnet::needsrelease{$key}
+            if ($otherserver ne '') {
+                $switchserver = 'otherserver='.$otherserver.'&amp;role='.$rolecode;
             }
-        } elsif ($item eq 'course') {
-            if ($name eq 'crstype') {
-                $checkcrstypes->{$value} = $Apache::lonnet::needsrelease{$key};
+        }
+    }
+    return ($switchserver,$warning);
+}
+
+=pod
+
+=item * &check_release_result()
+
+Inputs:
+
+$switchwarning - Warning message if no suitable server found to host session.
+
+$switchserver - query string to append to /adm/switchserver containing lonHostID
+                and current role.
+
+Returns: HTML to display with information about requirement to switch server.
+         Either displaying warning with link to Roles/Courses screen or
+         display link to switchserver.
+
+=cut
+
+sub check_release_result {
+    my ($switchwarning,$switchserver) = @_;
+    my $output = &start_page('Selected course unavailable on this server').
+                 '<p class="LC_warning">';
+    if ($switchwarning) {
+        $output .= $switchwarning.'<br /><a href="/adm/roles">';
+        if (&show_course()) {
+            $output .= &mt('Display courses');
+        } else {
+            $output .= &mt('Display roles');
+        }
+        $output .= '</a>';
+    } elsif ($switchserver) {
+        $output .= &mt('This course requires a newer version of LON-CAPA than is installed on this server.').
+                   '<br />'.
+                   '<a href="/adm/switchserver?'.$switchserver.'">'.
+                   &mt('Switch Server').
+                   '</a>';
+    }
+    $output .= '</p>'.&end_page();
+    return $output;
+}
+
+=pod
+
+=item * &needs_coursereinit()
+
+Determine if course contents stored for user's session needs to be
+refreshed, because content has changed since "Big Hash" last tied.
+
+Check for change is made if time last checked is more than 10 minutes ago
+(by default).
+
+Inputs:
+
+$loncaparev - Version on current server (format: Major.Minor.Subrelease-datestamp)
+
+$interval (optional) - Time which may elapse (in s) between last check for content
+                       change in current course. (default: 600 s).  
+
+Returns: an array; first element is:
+
+=over 4
+
+'switch' - if content updates mean user's session
+           needs to be switched to a server running a newer LON-CAPA version
+ 
+'update' - if course session needs to be refreshed (i.e., Big Hash needs to be reloaded)
+           on current server hosting user's session                
+
+''       - if no action required.
+
+=back
+
+If first item element is 'switch':
+
+second item is $switchwarning - Warning message if no suitable server found to host session. 
+
+third item is $switchserver - query string to append to /adm/switchserver containing lonHostID
+                              and current role. 
+
+otherwise: no other elements returned.
+
+=back
+
+=cut
+
+sub needs_coursereinit {
+    my ($loncaparev,$interval) = @_;
+    return() unless ($env{'request.course.id'} && $env{'request.course.tied'});
+    my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+    my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+    my $now = time;
+    if ($interval eq '') {
+        $interval = 600;
+    }
+    if (($now-$env{'request.course.timechecked'})>$interval) {
+        &Apache::lonnet::appenv({'request.course.timechecked'=>$now});
+        my $blocked = &blocking_status('reinit',$cnum,$cdom,undef,1);
+        if ($blocked) {
+            return ();
+        }
+        my $lastchange = &Apache::lonnet::get_coursechange($cdom,$cnum);
+        if ($lastchange > $env{'request.course.tied'}) {
+            my %curr_reqd_hash = &Apache::lonnet::userenvironment($cdom,$cnum,'internal.releaserequired');
+            if ($curr_reqd_hash{'internal.releaserequired'} ne '') {
+                my $required = $env{'course.'.$cdom.'_'.$cnum.'.internal.releaserequired'};
+                if ($curr_reqd_hash{'internal.releaserequired'} ne $required) {
+                    &Apache::lonnet::appenv({'course.'.$cdom.'_'.$cnum.'.internal.releaserequired' =>
+                                             $curr_reqd_hash{'internal.releaserequired'}});
+                    my ($switchserver,$switchwarning) =
+                        &check_release_required($loncaparev,$cdom.'_'.$cnum,$env{'request.role'},
+                                                $curr_reqd_hash{'internal.releaserequired'});
+                    if ($switchwarning ne '' || $switchserver ne '') {
+                        return ('switch',$switchwarning,$switchserver);
+                    }
+                }
             }
+            return ('update');
         }
     }
-    ($anonsurvey->{major},$anonsurvey->{minor}) = split(/\./,$Apache::lonnet::needsrelease{'parameter:type:anonsurvey'});
-    ($randomizetry->{major},$randomizetry->{minor}) = split(/\./,$Apache::lonnet::needsrelease{'parameter:type:randomizetry'});
-    return;
+    return ();
 }
 
 sub update_content_constraints {
     my ($cdom,$cnum,$chome,$cid) = @_;
     my %curr_reqd_hash = &Apache::lonnet::userenvironment($cdom,$cnum,'internal.releaserequired');
     my ($reqdmajor,$reqdminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
-    my %checkresponsetypes;
+    my (%checkresponsetypes,%checkcrsrestypes);
     foreach my $key (keys(%Apache::lonnet::needsrelease)) {
         my ($item,$name,$value) = split(/:/,$key);
         if ($item eq 'resourcetag') {
             if ($name eq 'responsetype') {
                 $checkresponsetypes{$value} = $Apache::lonnet::needsrelease{$key}
             }
+        } elsif ($item eq 'course') {
+            if ($name eq 'courserestype') {
+                $checkcrsrestypes{$value} = $Apache::lonnet::needsrelease{$key};
+            }
         }
     }
     my $navmap = Apache::lonnavmaps::navmap->new();
     if (defined($navmap)) {
-        my %allresponses;
-        foreach my $res ($navmap->retrieveResources(undef,sub { $_[0]->is_problem() },1,0)) {
+        my (%allresponses,%allcrsrestypes);
+        foreach my $res ($navmap->retrieveResources(undef,sub { $_[0]->is_problem() || $_[0]->is_tool() },1,0)) {
+            if ($res->is_tool()) {
+                if ($allcrsrestypes{'exttool'}) {
+                    $allcrsrestypes{'exttool'} ++;
+                } else {
+                    $allcrsrestypes{'exttool'} = 1;
+                }
+                next;
+            }
             my %responses = $res->responseTypes();
             foreach my $key (keys(%responses)) {
                 next unless(exists($checkresponsetypes{$key}));
@@ -15273,8 +17496,24 @@ sub update_content_constraints {
                 ($reqdmajor,$reqdminor) = ($major,$minor);
             }
         }
+        foreach my $key (keys(%allcrsrestypes)) {
+            my ($major,$minor) = split(/\./,$checkcrsrestypes{$key});
+            if (($major > $reqdmajor) || ($major == $reqdmajor && $minor > $reqdminor)) {
+                ($reqdmajor,$reqdminor) = ($major,$minor);
+            }
+        }
         undef($navmap);
     }
+    my $suppmap = 'supplemental.sequence';
+    my ($suppcount,$supptools,$errors) = (0,0,0);
+    ($suppcount,$supptools,$errors) = &recurse_supplemental($cnum,$cdom,$suppmap,
+                                                            $suppcount,$supptools,$errors);
+    if ($supptools) {
+        my ($major,$minor) = split(/\./,$checkcrsrestypes{'exttool'});
+        if (($major > $reqdmajor) || ($major == $reqdmajor && $minor > $reqdminor)) {
+            ($reqdmajor,$reqdminor) = ($major,$minor);
+        }
+    }
     unless (($reqdmajor eq '') && ($reqdminor eq '')) {
         &Apache::lonnet::update_released_required($reqdmajor.'.'.$reqdminor,$cdom,$cnum,$chome,$cid);
     }
@@ -15331,7 +17570,7 @@ sub parse_supplemental_title {
 }
 
 sub recurse_supplemental {
-    my ($cnum,$cdom,$suppmap,$numfiles,$errors) = @_;
+    my ($cnum,$cdom,$suppmap,$numfiles,$numexttools,$errors) = @_;
     if ($suppmap) {
         my ($errtext,$fatal) = &LONCAPA::map::mapread('/uploaded/'.$cdom.'/'.$cnum.'/'.$suppmap);
         if ($fatal) {
@@ -15342,8 +17581,12 @@ sub recurse_supplemental {
                     my ($title,$src,$ext,$type,$status)=split(/\:/,$res);
                     if (($src ne '') && ($status eq 'res')) {
                         if ($src =~ m{^\Q/uploaded/$cdom/$cnum/\E(supplemental_\d+\.sequence)$}) {
-                            ($numfiles,$errors) = &recurse_supplemental($cnum,$cdom,$1,$numfiles,$errors);
+                            ($numfiles,$numexttools,$errors) = &recurse_supplemental($cnum,$cdom,$1,
+                                                                   $numfiles,$numexttools,$errors);
                         } else {
+                            if ($src =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
+                                $numexttools ++;
+                            }
                             $numfiles ++;
                         }
                     }
@@ -15351,12 +17594,12 @@ sub recurse_supplemental {
             }
         }
     }
-    return ($numfiles,$errors);
+    return ($numfiles,$numexttools,$errors);
 }
 
 sub symb_to_docspath {
-    my ($symb) = @_;
-    return unless ($symb);
+    my ($symb,$navmapref) = @_;
+    return unless ($symb && ref($navmapref));
     my ($mapurl,$id,$resurl) = &Apache::lonnet::decode_symb($symb);
     if ($resurl=~/\.(sequence|page)$/) {
         $mapurl=$resurl;
@@ -15364,9 +17607,11 @@ sub symb_to_docspath {
         $mapurl=$env{'course.'.$env{'request.course.id'}.'.url'};
     }
     my $mapresobj;
-    my $navmap = Apache::lonnavmaps::navmap->new();
-    if (ref($navmap)) {
-        $mapresobj = $navmap->getResourceByUrl($mapurl);
+    unless (ref($$navmapref)) {
+        $$navmapref = Apache::lonnavmaps::navmap->new();
+    }
+    if (ref($$navmapref)) {
+        $mapresobj = $$navmapref->getResourceByUrl($mapurl);
     }
     $mapurl=~s{^.*/([^/]+)\.(\w+)$}{$1};
     my $type=$2;
@@ -15376,7 +17621,7 @@ sub symb_to_docspath {
         if ($pcslist ne '') {
             foreach my $pc (split(/,/,$pcslist)) {
                 next if ($pc <= 1);
-                my $res = $navmap->getByMapPc($pc);
+                my $res = $$navmapref->getByMapPc($pc);
                 if (ref($res)) {
                     my $thisurl = $res->src();
                     $thisurl=~s{^.*/([^/]+)\.\w+$}{$1};
@@ -15425,29 +17670,30 @@ sub symb_to_docspath {
 sub captcha_display {
     my ($context,$lonhost) = @_;
     my ($output,$error);
-    my ($captcha,$pubkey,$privkey) = &get_captcha_config($context,$lonhost);
+    my ($captcha,$pubkey,$privkey,$version) = 
+        &get_captcha_config($context,$lonhost);
     if ($captcha eq 'original') {
         $output = &create_captcha();
         unless ($output) {
             $error = 'captcha';
         }
     } elsif ($captcha eq 'recaptcha') {
-        $output = &create_recaptcha($pubkey);
+        $output = &create_recaptcha($pubkey,$version);
         unless ($output) {
             $error = 'recaptcha';
         }
     }
-    return ($output,$error,$captcha);
+    return ($output,$error,$captcha,$version);
 }
 
 sub captcha_response {
     my ($context,$lonhost) = @_;
     my ($captcha_chk,$captcha_error);
-    my ($captcha,$pubkey,$privkey) = &get_captcha_config($context,$lonhost);
+    my ($captcha,$pubkey,$privkey,$version) = &get_captcha_config($context,$lonhost);
     if ($captcha eq 'original') {
         ($captcha_chk,$captcha_error) = &check_captcha();
     } elsif ($captcha eq 'recaptcha') {
-        $captcha_chk = &check_recaptcha($privkey);
+        $captcha_chk = &check_recaptcha($privkey,$version);
     } else {
         $captcha_chk = 1;
     }
@@ -15456,7 +17702,7 @@ sub captcha_response {
 
 sub get_captcha_config {
     my ($context,$lonhost) = @_;
-    my ($captcha,$pubkey,$privkey,$hashtocheck);
+    my ($captcha,$pubkey,$privkey,$version,$hashtocheck);
     my $hostname = &Apache::lonnet::hostname($lonhost);
     my $serverhomeID = &Apache::lonnet::get_server_homeID($hostname);
     my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
@@ -15472,6 +17718,10 @@ sub get_captcha_config {
                     }
                     if ($privkey && $pubkey) {
                         $captcha = 'recaptcha';
+                        $version = $hashtocheck->{'recaptchaversion'};
+                        if ($version ne '2') {
+                            $version = 1;
+                        }
                     } else {
                         $captcha = 'original';
                     }
@@ -15489,6 +17739,10 @@ sub get_captcha_config {
             $privkey = $domconfhash{$serverhomedom.'.login.recaptchakeys_private'};
             if ($privkey && $pubkey) {
                 $captcha = 'recaptcha';
+                $version = $domconfhash{$serverhomedom.'.login.recaptchaversion'};
+                if ($version ne '2') {
+                    $version = 1; 
+                }
             } else {
                 $captcha = 'original';
             }
@@ -15496,7 +17750,7 @@ sub get_captcha_config {
             $captcha = 'original';
         }
     }
-    return ($captcha,$pubkey,$privkey);
+    return ($captcha,$pubkey,$privkey,$version);
 }
 
 sub create_captcha {
@@ -15555,38 +17809,66 @@ sub check_captcha {
 }
 
 sub create_recaptcha {
-    my ($pubkey) = @_;
-    my $use_ssl;
-    if ($ENV{'SERVER_PORT'} == 443) {
-        $use_ssl = 1;
-    }
-    my $captcha = Captcha::reCAPTCHA->new;
-    return $captcha->get_options_setter({theme => 'white'})."\n".
-           $captcha->get_html($pubkey,undef,$use_ssl).
-           &mt('If either word is hard to read, [_1] will replace them.',
-               '<img src="/res/adm/pages/refresh.gif" alt="reCAPTCHA refresh" />').
-           '<br /><br />';
+    my ($pubkey,$version) = @_;
+    if ($version >= 2) {
+        return '<div class="g-recaptcha" data-sitekey="'.$pubkey.'"></div>';
+    } else {
+        my $use_ssl;
+        if ($ENV{'SERVER_PORT'} == 443) {
+            $use_ssl = 1;
+        }
+        my $captcha = Captcha::reCAPTCHA->new;
+        return $captcha->get_options_setter({theme => 'white'})."\n".
+               $captcha->get_html($pubkey,undef,$use_ssl).
+               &mt('If the text is hard to read, [_1] will replace them.',
+                   '<img src="/res/adm/pages/refresh.gif" alt="reCAPTCHA refresh" />').
+               '<br /><br />';
+    }
 }
 
 sub check_recaptcha {
-    my ($privkey) = @_;
+    my ($privkey,$version) = @_;
     my $captcha_chk;
-    my $captcha = Captcha::reCAPTCHA->new;
-    my $captcha_result =
-        $captcha->check_answer(
-                                $privkey,
-                                $ENV{'REMOTE_ADDR'},
-                                $env{'form.recaptcha_challenge_field'},
-                                $env{'form.recaptcha_response_field'},
-                              );
-    if ($captcha_result->{is_valid}) {
-        $captcha_chk = 1;
+    if ($version >= 2) {
+        my %info = (
+                     secret   => $privkey, 
+                     response => $env{'form.g-recaptcha-response'},
+                     remoteip => $ENV{'REMOTE_ADDR'},
+                   );
+        my $request=new HTTP::Request('POST','https://www.google.com/recaptcha/api/siteverify');
+        $request->content(join('&',map {
+                         my $name = escape($_);
+                         "$name=" . ( ref($info{$_}) eq 'ARRAY'
+                         ? join("&$name=", map {escape($_) } @{$info{$_}})
+                         : &escape($info{$_}) );
+        } keys(%info)));
+        my $response = &LONCAPA::LWPReq::makerequest('',$request,'','',10,1);
+        if ($response->is_success)  {
+            my $data = JSON::DWIW->from_json($response->decoded_content);
+            if (ref($data) eq 'HASH') {
+                if ($data->{'success'}) {
+                    $captcha_chk = 1;
+                }
+            }
+        }
+    } else {
+        my $captcha = Captcha::reCAPTCHA->new;
+        my $captcha_result =
+            $captcha->check_answer(
+                                    $privkey,
+                                    $ENV{'REMOTE_ADDR'},
+                                    $env{'form.recaptcha_challenge_field'},
+                                    $env{'form.recaptcha_response_field'},
+                                  );
+        if ($captcha_result->{is_valid}) {
+            $captcha_chk = 1;
+        }
     }
     return $captcha_chk;
 }
 
 sub emailusername_info {
-    my @fields = ('firstname','lastname','institution','web','location','officialemail');
+    my @fields = ('firstname','lastname','institution','web','location','officialemail','id');
     my %titles = &Apache::lonlocal::texthash (
                      lastname      => 'Last Name',
                      firstname     => 'First Name',
@@ -15594,6 +17876,7 @@ sub emailusername_info {
                      location      => "School's city, state/province, country",
                      web           => "School's web address",
                      officialemail => 'E-mail address at institution (if different)',
+                     id            => 'Student/Employee ID',
                  );
     return (\@fields,\%titles);
 }
@@ -15620,6 +17903,42 @@ sub cleanup_html {
     return $outgoing;
 }
 
+# Checks for critical messages and returns a redirect url if one exists.
+# $interval indicates how often to check for messages.
+# $context is the calling context -- roles, grades, contents, menu or flip. 
+sub critical_redirect {
+    my ($interval,$context) = @_;
+    if ((time-$env{'user.criticalcheck.time'})>$interval) {
+        if (($env{'request.course.id'}) && (($context eq 'flip') || ($context eq 'contents'))) {
+            my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+            my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+            my $blocked = &blocking_status('alert',$cnum,$cdom,undef,1);
+            if ($blocked) {
+                my $checkrole = "cm./$cdom/$cnum";
+                if ($env{'request.course.sec'} ne '') {
+                    $checkrole .= "/$env{'request.course.sec'}";
+                }
+                unless ((&Apache::lonnet::allowed('evb',undef,undef,$checkrole)) &&
+                        ($env{'request.role'} !~ m{^st\./$cdom/$cnum})) {
+                    return;
+                }
+            }
+        }
+        my @what=&Apache::lonnet::dump('critical', $env{'user.domain'}, 
+                                        $env{'user.name'});
+        &Apache::lonnet::appenv({'user.criticalcheck.time'=>time});
+        my $redirecturl;
+        if ($what[0]) {
+	    if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
+	        $redirecturl='/adm/email?critical=display';
+	        my $url=&Apache::lonnet::absolute_url().$redirecturl;
+                return (1, $url);
+            }
+        }
+    } 
+    return ();
+}
+
 # Use:
 #   my $answer=reply("encrypt:passwd:$udom:$uname:$upass",$tryserver);
 #
@@ -15654,14 +17973,158 @@ sub des_decrypt {
     } else {
         $cypher=new DES $keybin;
     }
-    my $plaintext=
-        $cypher->decrypt(unpack("a8",pack("H16",substr($cyphertext,0,16))));
-    $plaintext.=
-        $cypher->decrypt(unpack("a8",pack("H16",substr($cyphertext,16,16))));
-    $plaintext=substr($plaintext,1,ord(substr($plaintext,0,1)) );
+    my $plaintext='';
+    my $cypherlength = length($cyphertext);
+    my $numchunks = int($cypherlength/32);
+    for (my $j=0; $j<$numchunks; $j++) {
+        my $start = $j*32;
+        my $cypherblock = substr($cyphertext,$start,32);
+        my $chunk =
+            $cypher->decrypt(unpack("a8",pack("H16",substr($cypherblock,0,16))));
+        $chunk .=
+            $cypher->decrypt(unpack("a8",pack("H16",substr($cypherblock,16,16))));
+        $chunk=substr($chunk,1,ord(substr($chunk,0,1)) );
+        $plaintext .= $chunk;
+    }
     return $plaintext;
 }
 
+sub make_short_symbs {
+    my ($cdom,$cnum,$navmap) = @_;
+    return unless (ref($navmap));
+    my ($numnew,@errors);
+    my @toshorten = &Apache::loncommon::get_env_multiple('form.addtiny');
+    if (@toshorten) {
+        my (%maps,%resources,%titles);
+        &Apache::loncourserespicker::enumerate_course_contents($navmap,\%maps,\%resources,\%titles,
+                                                               'shorturls',$cdom,$cnum);
+        my %tocreate;
+        if (keys(%resources)) {
+            foreach my $item (sort {$a <=> $b} (@toshorten)) {
+                my $symb = $resources{$item};
+                if ($symb) {
+                    $tocreate{$cnum.'&'.$symb} = 1;
+                }
+            }
+        }
+        if (keys(%tocreate)) {
+            my %coursetiny = &Apache::lonnet::dump('tiny',$cdom,$cnum);
+            my $su = Short::URL->new(no_vowels => 1);
+            my $init = '';
+            my (%newunique,%addcourse,%courseonly,%failed);
+            # get lock on tiny db
+            my $now = time;
+            my $lockhash = {
+                                "lock\0$now" => $env{'user.name'}.
+                                                ':'.$env{'user.domain'},
+                            };
+            my $tries = 0;
+            my $gotlock = &Apache::lonnet::newput_dom('tiny',$lockhash,$cdom);
+            my ($code,$error);
+            while (($gotlock ne 'ok') && ($tries<3)) {
+                $tries ++;
+                sleep 1;
+                $gotlock = &Apache::lonnet::newput_dom('tiny',$lockhash,$cdom);
+            }
+            if ($gotlock eq 'ok') {
+                $init = &shorten_symbs($cdom,$init,$su,\%coursetiny,\%tocreate,\%newunique,
+                                       \%addcourse,\%courseonly,\%failed);
+                if (keys(%failed)) {
+                    my $numfailed = scalar(keys(%failed));
+                    push(@errors,&mt('error: could not obtain unique six character URL for [quant,_1,resource]',$numfailed));
+                }
+                if (keys(%newunique)) {
+                    my $putres = &Apache::lonnet::newput_dom('tiny',\%newunique,$cdom);
+                    if ($putres eq 'ok') {
+                        $numnew = scalar(keys(%newunique));
+                        my $newputres = &Apache::lonnet::newput('tiny',\%addcourse,$cdom,$cnum);
+                        unless ($newputres eq 'ok') {
+                            push(@errors,&mt('error: could not store course look-up of short URLs'));
+                        }
+                    } else {
+                        push(@errors,&mt('error: could not store unique six character URLs'));
+                    }
+                }
+                my $dellockres = &Apache::lonnet::del_dom('tiny',["lock\0$now"],$cdom);
+                unless ($dellockres eq 'ok') {
+                    push(@errors,&mt('error: could not release lockfile'));
+                }
+            } else {
+                push(@errors,&mt('error: could not obtain lockfile'));
+            }
+            if (keys(%courseonly)) {
+                my $result = &Apache::lonnet::newput('tiny',\%courseonly,$cdom,$cnum);
+                if ($result ne 'ok') {
+                    push(@errors,&mt('error: could not update course look-up of short URLs'));
+                }
+            }
+        }
+    }
+    return ($numnew,\@errors);
+}
+
+sub shorten_symbs {
+    my ($cdom,$init,$su,$coursetiny,$tocreate,$newunique,$addcourse,$courseonly,$failed) = @_;
+    return unless ((ref($su)) && (ref($coursetiny) eq 'HASH') && (ref($tocreate) eq 'HASH') &&
+                   (ref($newunique) eq 'HASH') && (ref($addcourse) eq 'HASH') &&
+                   (ref($courseonly) eq 'HASH') && (ref($failed) eq 'HASH'));
+    my (%possibles,%collisions);
+    foreach my $key (keys(%{$tocreate})) {
+        my $num = String::CRC32::crc32($key);
+        my $tiny = $su->encode($num,$init);
+        if ($tiny) {
+            $possibles{$tiny} = $key;
+        }
+    }
+    if (!$init) {
+        $init = 1;
+    } else {
+        $init ++;
+    }
+    if (keys(%possibles)) {
+        my @posstiny = keys(%possibles);
+        my $configuname = &Apache::lonnet::get_domainconfiguser($cdom);
+        my %currtiny = &Apache::lonnet::get('tiny',\@posstiny,$cdom,$configuname);
+        if (keys(%currtiny)) {
+            foreach my $key (keys(%currtiny)) {
+                next if ($currtiny{$key} eq '');
+                if ($currtiny{$key} eq $possibles{$key}) {
+                    my ($tcnum,$tsymb) = split(/\&/,$currtiny{$key});
+                    unless (($coursetiny->{$tsymb} eq $key) || ($addcourse->{$tsymb} eq $key) || ($courseonly->{$tsymb} eq $key)) {
+                        $courseonly->{$tsymb} = $key;
+                    }
+                } else {
+                    $collisions{$possibles{$key}} = 1;
+                }
+                delete($possibles{$key});
+            }
+        }
+        foreach my $key (keys(%possibles)) {
+            $newunique->{$key} = $possibles{$key};
+            my ($tcnum,$tsymb) = split(/\&/,$possibles{$key});
+            unless (($coursetiny->{$tsymb} eq $key) || ($addcourse->{$tsymb} eq $key) || ($courseonly->{$tsymb} eq $key)) {
+                $addcourse->{$tsymb} = $key;
+            }
+        }
+    }
+    if (keys(%collisions)) {
+        if ($init <5) {
+            if (!$init) {
+                $init = 1;
+            } else {
+                $init ++;
+            }
+            $init = &shorten_symbs($cdom,$init,$su,$coursetiny,\%collisions,
+                                   $newunique,$addcourse,$courseonly,$failed);
+        } else {
+            foreach my $key (keys(%collisions)) {
+                $failed->{$key} = 1;
+            }
+        }
+    }
+    return $init;
+}
+
 1;
 __END__;